3x+2x+3x+4x=120

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Solution for 3x+2x+3x+4x=120 equation: 



3x+2x+3x+4x=120

We move all terms to the left:

3x+2x+3x+4x-(120)=0

We add all the numbers together, and all the variables

12x-120=0

We move all terms containing x to the left, all other terms to the right

12x=120

x=120/12

x=10

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