3x+5x+12x=180

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Solution for 3x+5x+12x=180 equation: 



3x+5x+12x=180

We move all terms to the left:

3x+5x+12x-(180)=0

We add all the numbers together, and all the variables

20x-180=0

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

20x=180

x=180/20

x=9

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