180=-3(-4-7x)

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Solution for 180=-3(-4-7x) equation: 



180=-3(-4-7x)

We move all terms to the left:

180-(-3(-4-7x))=0

We add all the numbers together, and all the variables

-(-3(-7x-4))+180=0



We calculate terms in parentheses: -(-3(-7x-4)), so:

-3(-7x-4)

We multiply parentheses

21x+12

Back to the equation:

-(21x+12)



We get rid of parentheses

-21x-12+180=0

We add all the numbers together, and all the variables

-21x+168=0

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

-21x=-168

x=-168/-21

x=+8

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