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 = 70
70 + 20 + 2x + x = 180

Combine like terms: 70 + 20 = 90
90 + 2x + x = 180

Combine like terms: 2x + x = 3x
90 + 3x = 180

Solving
90 + 3x = 180

Solving for variable 'x'.

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

Add '-90' to each side of the equation.
90 + -90 + 3x = 180 + -90

Combine like terms: 90 + -90 = 0
0 + 3x = 180 + -90
3x = 180 + -90

Combine like terms: 180 + -90 = 90
3x = 90

Divide each side by '3'.
x = 30

Simplifying
x = 30

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