Question

Describe the steps you would take to solve for the variable x in the following

equation:

2x – 31 = 7

Answer 1

x = 19

Explanation:

1. add 31 on both sides (you wanna get the "x" by itself)

ex: 2x - 31 = 7

+31 +31

2. the 31s cancel each other out so now you add 31 + 7

2x = 7

+31

___________

38

3. divide 2 on both sides so the 2s cancel each other out and only the x is left

ex: 2x / 2 = x 38 ( the 38 stands alone)

4. now divide 38/2 and you have your answer

X= 19