(3x+40)+(x+20)=180

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Solution for (3x+40)+(x+20)=180 equation: 


Simplifying
(3x + 40) + (x + 20) = 180

Reorder the terms:
(40 + 3x) + (x + 20) = 180

Remove parenthesis around (40 + 3x)
40 + 3x + (x + 20) = 180

Reorder the terms:
40 + 3x + (20 + x) = 180

Remove parenthesis around (20 + x)
40 + 3x + 20 + x = 180

Reorder the terms:
40 + 20 + 3x + x = 180

Combine like terms: 40 + 20 = 60
60 + 3x + x = 180

Combine like terms: 3x + x = 4x
60 + 4x = 180

Solving
60 + 4x = 180

Solving for variable 'x'.

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

Add '-60' to each side of the equation.
60 + -60 + 4x = 180 + -60

Combine like terms: 60 + -60 = 0
0 + 4x = 180 + -60
4x = 180 + -60

Combine like terms: 180 + -60 = 120
4x = 120

Divide each side by '4'.
x = 30

Simplifying
x = 30

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