x+(2x+40)+(x-20)=180

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Solution for x+(2x+40)+(x-20)=180 equation: 


Simplifying
x + (2x + 40) + (x + -20) = 180

Reorder the terms:
x + (40 + 2x) + (x + -20) = 180

Remove parenthesis around (40 + 2x)
x + 40 + 2x + (x + -20) = 180

Reorder the terms:
x + 40 + 2x + (-20 + x) = 180

Remove parenthesis around (-20 + x)
x + 40 + 2x + -20 + x = 180

Reorder the terms:
40 + -20 + x + 2x + x = 180

Combine like terms: 40 + -20 = 20
20 + x + 2x + x = 180

Combine like terms: x + 2x = 3x
20 + 3x + x = 180

Combine like terms: 3x + x = 4x
20 + 4x = 180

Solving
20 + 4x = 180

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 4x = 180 + -20

Combine like terms: 20 + -20 = 0
0 + 4x = 180 + -20
4x = 180 + -20

Combine like terms: 180 + -20 = 160
4x = 160

Divide each side by '4'.
x = 40

Simplifying
x = 40

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