180=7x+x+x

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Solution for 180=7x+x+x equation: 



180=7x+x+x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(+9x)+180=0

We get rid of parentheses

-9x+180=0

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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