-30=6(r+2)-6(-7r-1)

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Solution for -30=6(r+2)-6(-7r-1) equation: 



-30=6(r+2)-6(-7r-1)

We move all terms to the left:

-30-(6(r+2)-6(-7r-1))=0



We calculate terms in parentheses: -(6(r+2)-6(-7r-1)), so:

6(r+2)-6(-7r-1)

We multiply parentheses

6r+42r+12+6

We add all the numbers together, and all the variables

48r+18

Back to the equation:

-(48r+18)



We get rid of parentheses

-48r-18-30=0

We add all the numbers together, and all the variables

-48r-48=0

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

-48r=48

r=48/-48

r=-1

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