130-x+x+80-x=180

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Solution for 130-x+x+80-x=180 equation: 



130-x+x+80-x=180

We move all terms to the left:

130-x+x+80-x-(180)=0

We add all the numbers together, and all the variables

-1x+30=0

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

-x=-30

x=-30/-1

x=+30

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