-120 + 11x = 3x + 136
X= 32
Work :
• Move variable to the left side and change its sign
-120 + 11x = 3x + 136
- 3x -3x
__________________
-120 + 8x = 136
• Move constant to the right side and change its sign
-120 + 8x = 136
+120. +120
______________
8x = 256
• Divide both side by 8
8x = 256
__. ___
8. 8
• X = 32