120+111=X

Solution for 120+111=X equation:

Simplifying
120 + 111 = X

Combine like terms: 120 + 111 = 231
231 = X

Solving
231 = X

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-1X' to each side of the equation.
231 + -1X = X + -1X

Combine like terms: X + -1X = 0
231 + -1X = 0

Add '-231' to each side of the equation.
231 + -231 + -1X = 0 + -231

Combine like terms: 231 + -231 = 0
0 + -1X = 0 + -231
-1X = 0 + -231

Combine like terms: 0 + -231 = -231
-1X = -231

Divide each side by '-1'.
X = 231

Simplifying
X = 231