X-20+x+70=180

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Solution for X-20+x+70=180 equation: 



X-20+X+70=180

We move all terms to the left:

X-20+X+70-(180)=0

We add all the numbers together, and all the variables

2X-130=0

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

2X=130

X=130/2

X=65

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