To solve for x we have to isolate x on one side and then divide by the coefficient to get x by itself.

Taking an example, 3x + 6 = 12

First step - subtract 6 from both sides.

3x + 6 - 6 = 12 - 6

Simplifying, we get

3x = 6

To get x by itself, we divide both sides by the coefficient in front of the variable. In this case, we divide both sides by 3.

3x / 3 = 6 / 3


x = 2


Doing the generic formula, ax+b=c
ax + b - b = c - b
ax = c - b
x = (c-b)/a

Good luck.

Paul