Improve IQ - Fix The Equation

[@SimplyLogical]

There are 25 Matchstick Puzzles (fix the equation) presented in this video, Give it a try before checking the solution. Comment if you found an alternate solution.

[@asitbarandas4376]

2--7=8>>>>> 2+7=9

[@rasidingombong3918]

2+7=9

[@user-woosmath]

#13 0 - 3 = -3 #19 2 - 3 = -1