-x+9+7x=99

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Solution for -x+9+7x=99 equation:


Simplifying
-1x + 9 + 7x = 99

Reorder the terms:
9 + -1x + 7x = 99

Combine like terms: -1x + 7x = 6x
9 + 6x = 99

Solving
9 + 6x = 99

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 6x = 99 + -9

Combine like terms: 9 + -9 = 0
0 + 6x = 99 + -9
6x = 99 + -9

Combine like terms: 99 + -9 = 90
6x = 90

Divide each side by '6'.
x = 15

Simplifying
x = 15

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