X+109+x+89=y

Solution for X+109+x+89=y equation:

Simplifying
X + 109 + x + 89 = y

Reorder the terms:
109 + 89 + X + x = y

Combine like terms: 109 + 89 = 198
198 + X + x = y

Solving
198 + X + x = y

Solving for variable 'X'.

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

Add '-198' to each side of the equation.
198 + X + -198 + x = -198 + y

Reorder the terms:
198 + -198 + X + x = -198 + y

Combine like terms: 198 + -198 = 0
0 + X + x = -198 + y
X + x = -198 + y

Add '-1x' to each side of the equation.
X + x + -1x = -198 + -1x + y

Combine like terms: x + -1x = 0
X + 0 = -198 + -1x + y
X = -198 + -1x + y

Simplifying
X = -198 + -1x + y