180=(x-20)+(4x+10)+(2x-20)

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Solution for 180=(x-20)+(4x+10)+(2x-20) equation:


Simplifying
180 = (x + -20) + (4x + 10) + (2x + -20)

Reorder the terms:
180 = (-20 + x) + (4x + 10) + (2x + -20)

Remove parenthesis around (-20 + x)
180 = -20 + x + (4x + 10) + (2x + -20)

Reorder the terms:
180 = -20 + x + (10 + 4x) + (2x + -20)

Remove parenthesis around (10 + 4x)
180 = -20 + x + 10 + 4x + (2x + -20)

Reorder the terms:
180 = -20 + x + 10 + 4x + (-20 + 2x)

Remove parenthesis around (-20 + 2x)
180 = -20 + x + 10 + 4x + -20 + 2x

Reorder the terms:
180 = -20 + 10 + -20 + x + 4x + 2x

Combine like terms: -20 + 10 = -10
180 = -10 + -20 + x + 4x + 2x

Combine like terms: -10 + -20 = -30
180 = -30 + x + 4x + 2x

Combine like terms: x + 4x = 5x
180 = -30 + 5x + 2x

Combine like terms: 5x + 2x = 7x
180 = -30 + 7x

Solving
180 = -30 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
180 + -7x = -30 + 7x + -7x

Combine like terms: 7x + -7x = 0
180 + -7x = -30 + 0
180 + -7x = -30

Add '-180' to each side of the equation.
180 + -180 + -7x = -30 + -180

Combine like terms: 180 + -180 = 0
0 + -7x = -30 + -180
-7x = -30 + -180

Combine like terms: -30 + -180 = -210
-7x = -210

Divide each side by '-7'.
x = 30

Simplifying
x = 30

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