Answer:
55 =x
Step-by-step explanation:
x+15=2x-40
Subtract x from each side
x-x+15=2x-x-40
15 = x-40
Add 40 to each side
15+40 = x-40+40
x = 55
take away x from both sides and add 40 on both sides to get the like terms on each side
55 = x
