-90=9x-9

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Solution for -90=9x-9 equation:


Simplifying
-90 = 9x + -9

Reorder the terms:
-90 = -9 + 9x

Solving
-90 = -9 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-90 + -9x = -9 + 9x + -9x

Combine like terms: 9x + -9x = 0
-90 + -9x = -9 + 0
-90 + -9x = -9

Add '90' to each side of the equation.
-90 + 90 + -9x = -9 + 90

Combine like terms: -90 + 90 = 0
0 + -9x = -9 + 90
-9x = -9 + 90

Combine like terms: -9 + 90 = 81
-9x = 81

Divide each side by '-9'.
x = -9

Simplifying
x = -9

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