40+2x-30+x+20=180

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Solution for 40+2x-30+x+20=180 equation: 


Simplifying
40 + 2x + -30 + x + 20 = 180

Reorder the terms:
40 + -30 + 20 + 2x + x = 180

Combine like terms: 40 + -30 = 10
10 + 20 + 2x + x = 180

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

Combine like terms: 2x + x = 3x
30 + 3x = 180

Solving
30 + 3x = 180

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 3x = 180 + -30

Combine like terms: 30 + -30 = 0
0 + 3x = 180 + -30
3x = 180 + -30

Combine like terms: 180 + -30 = 150
3x = 150

Divide each side by '3'.
x = 50

Simplifying
x = 50

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