9-9x=-171

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Solution for 9-9x=-171 equation: 


Simplifying
9 + -9x = -171

Solving
9 + -9x = -171

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 + -9x = -171 + -9

Combine like terms: 9 + -9 = 0
0 + -9x = -171 + -9
-9x = -171 + -9

Combine like terms: -171 + -9 = -180
-9x = -180

Divide each side by '-9'.
x = 20

Simplifying
x = 20

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