(1/4 - 1/2)/(2/5 - 1) , ANYONE with BASIC Math Skills should get THIS!

Order of operations (PEMDAS) practice problem and solution with fractions and positive and negative numbers.
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[@StevenTorrey]

First, do what is within the parenthesis, then divide those answers. (Doing it the supid way: 0 .25/-0.50 = 0-.25. And then 0.40 -1 = -0.6. Then divide -.25 / -0.60 = 0.416... ) 0.416 = 5/12.

[@nyneeveanya8861]

Got this right. Got you beat I was learning basic math in the 1960’s

[@bigdog3628]

super simple if you have decent math skills. rewrite as (1/4 - 2/4) / (2/5 - 5/5) This gives us (-1/4) / (-3/5) Final step: cross multiplication starting with the denominator of second fraction and numerator of first fraction. Then first denominator and second numerator. Gives us -5/-12 which is just 5/12. (Or if too complicated for you just remember when dividing just take the reciprocal of second term. This case it would be -5/3)

[@naderhumood1199]

Lovely exe thank you v much indeed .

[@mingkee27]

It sounds tricky, but how about make the products from both parentheses? 1/4 - 1/2 >>> -1/4 2/5 - 5/5 (converted from 1) >>> -3/5 Treat both as positive when negative ➗ negative 1/4 * 5/3 (yes, turn it upside down) >>> 5/12 Answer is 5/12

[@newstarcadefan]

I think I know where I made my mistake when I tried the problem out on pencil and paper.

[@russelllomando8460]

woo hoo, got it. nice one. learned in the mid-'60s. thanks.

[@dlkline27]

5/12 in my head. Sure don't need a calculator for this one. Love these "exercises".

[@garyalabama]

Easy! Didn’t even need pencil or paper

[@johnnyllooddte3415]

-1/4 x -3/5 =3/20s hopefully.. nope...times x -5/3= +5/12s.. made a mistake

[@jonzelstein1682]

Gotta get right. I get it.

[@mylittlepitbull3143]

I hired a team of mathematicians and accountants to help me solve this problem and we'll get back to you as soon as we have an answer.

[@harrymatabal8448]

Your answer will be quicker that this man talking

[@mollymam7153]

5/12

[@ozfire7]

Ans. 5/12

[@jameswysocki6806]

I learned that to divide fractions you "cross multiply", same exact concept, just wondering if the term is still used?

[@Yourself89]

I remember now thank you

[@timhuurdeman9272]

How does the minus the numerator shift to minus the fraction ? Otherwise the answer would be -5/-12.

[@enriqueiii9209]

2/5 - 1, 2/5 - 5/5 , 2 - 5 = -3, -1 x -5 = 5, two negatives equals a positive. Hope you understand what I did.

[@harrymatabal8448]

-1/4. × -5/3= 5/12

[@portionsredacted7743]

5/12 I believe

[@darrellseike3185]

1/4

[@user-pn1vh8lc5z]

3/20

[@harrymatabal8448]

5/12 in 10 Seconds

[@Mrskateboardboy]

- 5??

[@AmillJaime-ub3lc]

-3/20

[@bradlewis8036]

What happened to PEMDAS being used for solely simplifying. And when you are solving, which uses the word “equals”. You are supposed to use SADMEP? PEMDAS backwards. I’m confused sir??!!!!!! Please help me.

[@afre3398]

OK what do you struggle with

[@bradlewis8036]

@@afre3398 In the video I heard him say equals. But in the video he also mentions PEMDAS. You are supposed to use PEMDAS just to simply. But to solve you PEMDAS backwards, which is SADMEP. And I’ve triple watched the video to be really convinced about what I’m saying.

[@afre3398]

@@bradlewis8036 1 write the problem with proper fraction lines 2 find the least common denominator inside each parentheses 3 simplify 4 do a fraction division PEMDAS is a lie. PEMDAS is an oversimplification that we teach to children to make things easy. It's like saying that negative numbers don't have square roots, we just want to get on with the lesson. But PEMDAS isn't the way that mathematicians, physicists, or engineers actually evaluate mathematical expressions

[@aryusure1943]

All good except that you missed an opportunity to explain that part: When the numerator of a fraction is a negative and the denominator is a positive or vice versa the WHOLE fraction is a negative. Then we can forget about the negative/positive thing altogether and we do the maths knowing that the result will be a positive IF our 2 fractions are both negative AS A WHOLE. (which is funny because a fraction is not "whole" in the first place, but you get the point) You forgot to explain why, in such a case, we can't isolate the negative signs when we do the division at the end. You assume that your viewers know that rule. If I choose to simplify only at the end of the operation that I do step by step I arrive at this result: -5/-12. If I don't know that very rule you did not care to explain I WILL BE DISTRACTED by the positive/negative part of the problem. In other words I will divide -10 by 2 thinking that the result will be - 5. The same for the denominator. So I could be confused thinking that the solution is -5/-12. Do you see the problem here or is it just me? Sometimes you forget some important details in your explanations. Not often, but on some occasions. But let me explain what I did BASED on your previous teachings: First I used the bow tie hack for both parentheses. Parentheses #1: 2 - 4/8 = - 2/8 Parentheses #2: 2 - 5/5 = - 3/5 Then I divided P1 by P2: -2/8 X 5/- 3 = -10/-24. Then I simplified and got this: -5/-12 But since a fraction is a numerator divided by a denominator I am supposed to guess (If I am not thaught) that my fraction is in fact a positive because I have a negative divided by a negative. But my solution of -5/-12 is right if I follow all the steps required. Because at the end of the day and if I simplify further I get 0.42 (rounded) i.e. a positive decimal. And I would get the same result if my fraction was 5/12. I hope and I am sure that you understand my point. But I am not so sure that all your viewers will. So at the end of the day there are 2 solutions for this problem in my humble opinion: 5/12 AND -5/-12. Unless we accept that rule that you just applied without explaining why we should not isolate the negative sign in similar operations even if we get a negative numerator with a positive denominator.

[@timhuurdeman9272]

Oooh, that's why I got -5/-12. I didn't know about that rule. I got all the basics right, but he should have explained exactly that part. So thanks for explaining!

[@aryusure1943]

@@timhuurdeman9272 Yeah! And instead of acknowledging my comment like a man or telling me why I'm wrong if I am he messed up my explanation as I can see by scratching part of it and removing the negative sign that was there in front of the numerator (-2/8). I clicked on "modify" to make the correction and then I see what I wrote in the first place. So, there is no scratch on my original comment at all. He somehow put it in there to make me look like a fool. If I'm right this guy is nasty. ;)

[@rdaltry777]

Wait, what? 21 minutes to solve a simple math problem? This is what is wrong with education today.

[@afre3398]

ANYONE with BASIC Math Skills should write problems with proper fractions lines. That is also your own advice so why do you not follow it. using / or ÷ have no place in any math problem no matter what level you try to teach. In this case it does not mater much for sure. But you love to present what are inherent ambiguous. Why would a math teacher with allegedly decades of experience do that??

[@maxinemcafee4893]

Why would you use the word percent instead of present?

[@afre3398]

@@maxinemcafee4893 my bad it was a mobile typing error. But how about play the ball and not the person

[@_Aardvark_]

Maybe if you are playing Scrabble.

[@GaryBricaultLive]

" using / or ÷ have no place in any math problem no matter what level you try to teach" That's just not true. The / should be used to indicate division and not the ÷ any longer. Fractions are best represented using a bar to separate the numerator and denominator. But that is not always possible when typing text representations. I do agree that this guy presents consistently ambiguously constructed presentations. ANd to make matter worse he is way too long winded and frequently diverts from what is actually the instructional components. He is NOT a good teacher.

[@ernestscribbler-Inyenga]

He sure can yap ; 7 minutes before he actually does anything

[@gregwessels7205]

He's a teacher, they have the whole class time to fill.😂

[@marcguimaraes]

You are fantastic explaining it! They don't have teachers like you any longer.... 👍🫶

[@fromme705]

.411667

[@thelmalazarus8332]

5/12

[@rodfulford4306]

5/12

[@DayanandPandey-ns5qc]

5/12

[@Jennianner]

5/12

[@antonkiefer9973]

5/12

[@MsSlite]

5/12

[@alexmackenzie7249]

5/12