180=(11x+12)+(9x-12)

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Solution for 180=(11x+12)+(9x-12) equation:


Simplifying
180 = (11x + 12) + (9x + -12)

Reorder the terms:
180 = (12 + 11x) + (9x + -12)

Remove parenthesis around (12 + 11x)
180 = 12 + 11x + (9x + -12)

Reorder the terms:
180 = 12 + 11x + (-12 + 9x)

Remove parenthesis around (-12 + 9x)
180 = 12 + 11x + -12 + 9x

Reorder the terms:
180 = 12 + -12 + 11x + 9x

Combine like terms: 12 + -12 = 0
180 = 0 + 11x + 9x
180 = 11x + 9x

Combine like terms: 11x + 9x = 20x
180 = 20x

Solving
180 = 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
180 + -20x = 20x + -20x

Combine like terms: 20x + -20x = 0
180 + -20x = 0

Add '-180' to each side of the equation.
180 + -180 + -20x = 0 + -180

Combine like terms: 180 + -180 = 0
0 + -20x = 0 + -180
-20x = 0 + -180

Combine like terms: 0 + -180 = -180
-20x = -180

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

Simplifying
x = 9

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