90-7x=3x

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Solution for 90-7x=3x equation:


Simplifying
90 + -7x = 3x

Solving
90 + -7x = 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 + -7x + -3x = 3x + -3x

Combine like terms: -7x + -3x = -10x
90 + -10x = 3x + -3x

Combine like terms: 3x + -3x = 0
90 + -10x = 0

Add '-90' to each side of the equation.
90 + -90 + -10x = 0 + -90

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

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

Divide each side by '-10'.
x = 9

Simplifying
x = 9

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