Question

What is the solution to this equation? x - 12 = 9 A. x = -3 B. x = 3 C. x = -21 D. x = 21

Answer 1

Your answer would be D. X = 21 because 21 - 12 = 9

Answer 2

First: Add 12 to both 9 and 12
 x - 12(+12) = 9(+12)

Next: Put your equation in order
x = 21

Last: Get Answer

x = 21