3x+x+3x+x=144

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Solution for 3x+x+3x+x=144 equation: 


Simplifying
3x + x + 3x + x = 144

Combine like terms: 3x + x = 4x
4x + 3x + x = 144

Combine like terms: 4x + 3x = 7x
7x + x = 144

Combine like terms: 7x + x = 8x
8x = 144

Solving
8x = 144

Solving for variable 'x'.

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

Divide each side by '8'.
x = 18

Simplifying
x = 18

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