180=(7x-1)+(2x+1)

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Solution for 180=(7x-1)+(2x+1) equation: 



180=(7x-1)+(2x+1)

We move all terms to the left:

180-((7x-1)+(2x+1))=0



We calculate terms in parentheses: -((7x-1)+(2x+1)), so:

(7x-1)+(2x+1)

We get rid of parentheses

7x+2x-1+1

We add all the numbers together, and all the variables

9x

Back to the equation:

-(9x)



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

-9x=-180

x=-180/-9

x=+20

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