(x+90)+(x+15)=x

Solution for (x+90)+(x+15)=x equation:

Simplifying
(x + 90) + (x + 15) = x

Reorder the terms:
(90 + x) + (x + 15) = x

Remove parenthesis around (90 + x)
90 + x + (x + 15) = x

Reorder the terms:
90 + x + (15 + x) = x

Remove parenthesis around (15 + x)
90 + x + 15 + x = x

Reorder the terms:
90 + 15 + x + x = x

Combine like terms: 90 + 15 = 105
105 + x + x = x

Combine like terms: x + x = 2x
105 + 2x = x

Solving
105 + 2x = 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.
105 + 2x + -1x = x + -1x

Combine like terms: 2x + -1x = 1x
105 + 1x = x + -1x

Combine like terms: x + -1x = 0
105 + 1x = 0

Add '-105' to each side of the equation.
105 + -105 + 1x = 0 + -105

Combine like terms: 105 + -105 = 0
0 + 1x = 0 + -105
1x = 0 + -105

Combine like terms: 0 + -105 = -105
1x = -105

Divide each side by '1'.
x = -105

Simplifying
x = -105