Question

X+31=2(x+21) solve for x

Answer 1

Answer: x=-11

Explanation:

x+31=2(x+21),

x+31=2x+42

x+31-31=2x+42-31

x=2x+11

x-2x=2x+11-2x

-x=11

x=-11

Answer 2

x+31=2(x+21)

distribute

x+31 = 2x+42

subtract x from each side

31 = x+42

subtract 42 from each side

-11 =x