X+(x+20)+(x+20+30)=220

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Solution for X+(x+20)+(x+20+30)=220 equation: 



X+(X+20)+(X+20+30)=220

We move all terms to the left:

X+(X+20)+(X+20+30)-(220)=0

We add all the numbers together, and all the variables

X+(X+20)+(X+50)-220=0

We get rid of parentheses

X+X+X+20+50-220=0

We add all the numbers together, and all the variables

3X-150=0

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

3X=150

X=150/3

X=50

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