(x-15)+x=90

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


Simplifying
(x + -15) + x = 90

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

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

Combine like terms: x + x = 2x
-15 + 2x = 90

Solving
-15 + 2x = 90

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 2x = 90 + 15

Combine like terms: -15 + 15 = 0
0 + 2x = 90 + 15
2x = 90 + 15

Combine like terms: 90 + 15 = 105
2x = 105

Divide each side by '2'.
x = 52.5

Simplifying
x = 52.5

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