(X+40)+(x+40)+(x-40)=180

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


Simplifying
(X + 40) + (x + 40) + (x + -40) = 180

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

Remove parenthesis around (40 + X)
40 + X + (x + 40) + (x + -40) = 180

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

Remove parenthesis around (40 + x)
40 + X + 40 + x + (x + -40) = 180

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

Remove parenthesis around (-40 + x)
40 + X + 40 + x + -40 + x = 180

Reorder the terms:
40 + 40 + -40 + X + x + x = 180

Combine like terms: 40 + 40 = 80
80 + -40 + X + x + x = 180

Combine like terms: 80 + -40 = 40
40 + X + x + x = 180

Combine like terms: x + x = 2x
40 + X + 2x = 180

Solving
40 + X + 2x = 180

Solving for variable 'X'.

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

Add '-40' to each side of the equation.
40 + X + -40 + 2x = 180 + -40

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

Combine like terms: 40 + -40 = 0
0 + X + 2x = 180 + -40
X + 2x = 180 + -40

Combine like terms: 180 + -40 = 140
X + 2x = 140

Add '-2x' to each side of the equation.
X + 2x + -2x = 140 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 140 + -2x
X = 140 + -2x

Simplifying
X = 140 + -2x

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