x+15+x-15=90

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Solution for x+15+x-15=90 equation: 


Simplifying
x + 15 + x + -15 = 90

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

Combine like terms: 15 + -15 = 0
0 + x + x = 90
x + x = 90

Combine like terms: x + x = 2x
2x = 90

Solving
2x = 90

Solving for variable 'x'.

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

Divide each side by '2'.
x = 45

Simplifying
x = 45

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