180=7x-3(-5+15)

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Solution for 180=7x-3(-5+15) equation: 



180=7x-3(-5+15)

We move all terms to the left:

180-(7x-3(-5+15))=0

We add all the numbers together, and all the variables

-(7x-310)+180=0

We get rid of parentheses

-7x+310+180=0

We add all the numbers together, and all the variables

-7x+490=0

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

-7x=-490

x=-490/-7

x=+70

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