90=2x+(15+x)

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Solution for 90=2x+(15+x) equation:


Simplifying
90 = 2x + (15 + x)

Remove parenthesis around (15 + x)
90 = 2x + 15 + x

Reorder the terms:
90 = 15 + 2x + x

Combine like terms: 2x + x = 3x
90 = 15 + 3x

Solving
90 = 15 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
90 + -3x = 15 + 3x + -3x

Combine like terms: 3x + -3x = 0
90 + -3x = 15 + 0
90 + -3x = 15

Add '-90' to each side of the equation.
90 + -90 + -3x = 15 + -90

Combine like terms: 90 + -90 = 0
0 + -3x = 15 + -90
-3x = 15 + -90

Combine like terms: 15 + -90 = -75
-3x = -75

Divide each side by '-3'.
x = 25

Simplifying
x = 25

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