(x+3)+(2x+6)=180

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Solution for (x+3)+(2x+6)=180 equation: 



(x+3)+(2x+6)=180

We move all terms to the left:

(x+3)+(2x+6)-(180)=0

We get rid of parentheses

x+2x+3+6-180=0

We add all the numbers together, and all the variables

3x-171=0

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

3x=171

x=171/3

x=57

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