70+(2x-10)+(x+30)=180

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Solution for 70+(2x-10)+(x+30)=180 equation: 



70+(2x-10)+(x+30)=180

We move all terms to the left:

70+(2x-10)+(x+30)-(180)=0

We add all the numbers together, and all the variables

(2x-10)+(x+30)-110=0

We get rid of parentheses

2x+x-10+30-110=0

We add all the numbers together, and all the variables

3x-90=0

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

3x=90

x=90/3

x=30

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