90-3x=7-9x

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Solution for 90-3x=7-9x equation:


Simplifying
90 + -3x = 7 + -9x

Solving
90 + -3x = 7 + -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 + -3x + 9x = 7 + -9x + 9x

Combine like terms: -3x + 9x = 6x
90 + 6x = 7 + -9x + 9x

Combine like terms: -9x + 9x = 0
90 + 6x = 7 + 0
90 + 6x = 7

Add '-90' to each side of the equation.
90 + -90 + 6x = 7 + -90

Combine like terms: 90 + -90 = 0
0 + 6x = 7 + -90
6x = 7 + -90

Combine like terms: 7 + -90 = -83
6x = -83

Divide each side by '6'.
x = -13.83333333

Simplifying
x = -13.83333333

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