30x+20x+10x=180

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Solution for 30x+20x+10x=180 equation: 



30x+20x+10x=180

We move all terms to the left:

30x+20x+10x-(180)=0

We add all the numbers together, and all the variables

60x-180=0

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

60x=180

x=180/60

x=3

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