(3x+15)+(3x-15)=180

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Solution for (3x+15)+(3x-15)=180 equation: 



(3x+15)+(3x-15)=180

We move all terms to the left:

(3x+15)+(3x-15)-(180)=0

We get rid of parentheses

3x+3x+15-15-180=0

We add all the numbers together, and all the variables

6x-180=0

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

6x=180

x=180/6

x=30

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