STEP ONE 7x - 7 = 2x - 1
^ ^
| |
+2x -2x
STEP TWO 9x - 7 = -1
^ ^
| |
+7 -7
ANSWER: 9x = -8
Basically you need to start by removing the “X” on the left side by subtracting the value and adding it onto the other side. Then you need to remove the number from the left side by adding that value to it and subtracting it from the other side. Once you’ve done that you have your answer