90=2x+(5x-1)

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Solution for 90=2x+(5x-1) equation:


Simplifying
90 = 2x + (5x + -1)

Reorder the terms:
90 = 2x + (-1 + 5x)

Remove parenthesis around (-1 + 5x)
90 = 2x + -1 + 5x

Reorder the terms:
90 = -1 + 2x + 5x

Combine like terms: 2x + 5x = 7x
90 = -1 + 7x

Solving
90 = -1 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
90 + -7x = -1 + 7x + -7x

Combine like terms: 7x + -7x = 0
90 + -7x = -1 + 0
90 + -7x = -1

Add '-90' to each side of the equation.
90 + -90 + -7x = -1 + -90

Combine like terms: 90 + -90 = 0
0 + -7x = -1 + -90
-7x = -1 + -90

Combine like terms: -1 + -90 = -91
-7x = -91

Divide each side by '-7'.
x = 13

Simplifying
x = 13

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