x+3x+2(3x+x)=180

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Solution for x+3x+2(3x+x)=180 equation: 


Simplifying
x + 3x + 2(3x + x) = 180

Combine like terms: 3x + x = 4x
x + 3x + 2(4x) = 180

Remove parenthesis around (4x)
x + 3x + 2 * 4x = 180

Multiply 2 * 4
x + 3x + 8x = 180

Combine like terms: x + 3x = 4x
4x + 8x = 180

Combine like terms: 4x + 8x = 12x
12x = 180

Solving
12x = 180

Solving for variable 'x'.

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

Divide each side by '12'.
x = 15

Simplifying
x = 15

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