180=(90)+(7x-20)+(4x)

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Solution for 180=(90)+(7x-20)+(4x) equation:


Simplifying
180 = (90) + (7x + -20) + (4x)
180 = 90 + (7x + -20) + (4x)

Reorder the terms:
180 = 90 + (-20 + 7x) + (4x)

Remove parenthesis around (-20 + 7x)
180 = 90 + -20 + 7x + (4x)

Combine like terms: 90 + -20 = 70
180 = 70 + 7x + (4x)

Combine like terms: 7x + (4x) = 11x
180 = 70 + 11x

Solving
180 = 70 + 11x

Solving for variable 'x'.

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

Add '-11x' to each side of the equation.
180 + -11x = 70 + 11x + -11x

Combine like terms: 11x + -11x = 0
180 + -11x = 70 + 0
180 + -11x = 70

Add '-180' to each side of the equation.
180 + -180 + -11x = 70 + -180

Combine like terms: 180 + -180 = 0
0 + -11x = 70 + -180
-11x = 70 + -180

Combine like terms: 70 + -180 = -110
-11x = -110

Divide each side by '-11'.
x = 10

Simplifying
x = 10

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