(x-30)+(2x-80)+(x-70)=180

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Solution for (x-30)+(2x-80)+(x-70)=180 equation: 



(x-30)+(2x-80)+(x-70)=180

We move all terms to the left:

(x-30)+(2x-80)+(x-70)-(180)=0

We get rid of parentheses

x+2x+x-30-80-70-180=0

We add all the numbers together, and all the variables

4x-360=0

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

4x=360

x=360/4

x=90

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