100+30+(x-20)=180

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Solution for 100+30+(x-20)=180 equation: 



100+30+(x-20)=180

We move all terms to the left:

100+30+(x-20)-(180)=0

We add all the numbers together, and all the variables

(x-20)-50=0

We get rid of parentheses

x-20-50=0

We add all the numbers together, and all the variables

x-70=0

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

x=70

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