X+30+(x-20)=180

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



X+30+(X-20)=180

We move all terms to the left:

X+30+(X-20)-(180)=0

We add all the numbers together, and all the variables

X+(X-20)-150=0

We get rid of parentheses

X+X-20-150=0

We add all the numbers together, and all the variables

2X-170=0

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

2X=170

X=170/2

X=85

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