30=6(r-7)

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



30=6(r-7)

We move all terms to the left:

30-(6(r-7))=0



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

6(r-7)

We multiply parentheses

6r-42

Back to the equation:

-(6r-42)



We get rid of parentheses

-6r+42+30=0

We add all the numbers together, and all the variables

-6r+72=0

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

-6r=-72

r=-72/-6

r=+12

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