7x+20=180-3x

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Solution for 7x+20=180-3x equation: 



7x+20=180-3x

We move all terms to the left:

7x+20-(180-3x)=0

We add all the numbers together, and all the variables

7x-(-3x+180)+20=0

We get rid of parentheses

7x+3x-180+20=0

We add all the numbers together, and all the variables

10x-160=0

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

10x=160

x=160/10

x=16

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