Question

What is the value of x? x + 3 = - 9 Enter your answer in the box.

Answer 1

Move +3 to the right side of the equal sign (which becomes -3) in order to combine the numbers to find x:

x=-9-3

-9-3 is -12

x=-12

Answer 2

x + 3 = -9    subtract 3 from both sides

x + 3 - 3 = -9 - 3

x = -12