Answer is A.
You start by adding the 7 to the opposite side. Giving you 19. You divide both sides by -2 which gives you x on one side and -9.5 on the other.
-2x-7=12
-2x=12(+7)
-2x=19
x=19/-2
x=-9.5
A
This is because 4x18 = 72
Hope this helps
Answer:
B
Step-by-step explanation:
Answer:
m=3
Step-by-step explanation:
expand and move the terms around
18m+4-1=27+10m
8m=24
m=3