3x+4x+5x=120

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Solution for 3x+4x+5x=120 equation: 


Simplifying
3x + 4x + 5x = 120

Combine like terms: 3x + 4x = 7x
7x + 5x = 120

Combine like terms: 7x + 5x = 12x
12x = 120

Solving
12x = 120

Solving for variable 'x'.

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

Divide each side by '12'.
x = 10

Simplifying
x = 10

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