Answer:
3 hours
Step-by-step explanation:
50 + 12h = 86
12h = 36
h = 3
50+12h=86
-50 on both sides
12h=36
divide by 12 on both sides
h=3
6-2
so first you know you will have to divide it by both numbers you have and whatever number u have thats your answer
A
supplementary agles add up to 180 degrees, so when you subtract 162 from 180, you get 18. Hope this helped :D
b
The commutative property of addition I think
