(90-x)=5x

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Solution for (90-x)=5x equation:


Simplifying
(90 + -1x) = 5x

Remove parenthesis around (90 + -1x)
90 + -1x = 5x

Solving
90 + -1x = 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
90 + -1x + -5x = 5x + -5x

Combine like terms: -1x + -5x = -6x
90 + -6x = 5x + -5x

Combine like terms: 5x + -5x = 0
90 + -6x = 0

Add '-90' to each side of the equation.
90 + -90 + -6x = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -6x = 0 + -90
-6x = 0 + -90

Combine like terms: 0 + -90 = -90
-6x = -90

Divide each side by '-6'.
x = 15

Simplifying
x = 15

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