90=10x-20

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Solution for 90=10x-20 equation:


Simplifying
90 = 10x + -20

Reorder the terms:
90 = -20 + 10x

Solving
90 = -20 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
90 + -10x = -20 + 10x + -10x

Combine like terms: 10x + -10x = 0
90 + -10x = -20 + 0
90 + -10x = -20

Add '-90' to each side of the equation.
90 + -90 + -10x = -20 + -90

Combine like terms: 90 + -90 = 0
0 + -10x = -20 + -90
-10x = -20 + -90

Combine like terms: -20 + -90 = -110
-10x = -110

Divide each side by '-10'.
x = 11

Simplifying
x = 11

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