180-3x=x+20

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Solution for 180-3x=x+20 equation: 



180-3x=x+20

We move all terms to the left:

180-3x-(x+20)=0

We get rid of parentheses

-3x-x-20+180=0

We add all the numbers together, and all the variables

-4x+160=0

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

-4x=-160

x=-160/-4

x=+40

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