-2(r+12)=7(r+12)

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Solution for -2(r+12)=7(r+12) equation: 



-2(r+12)=7(r+12)

We move all terms to the left:

-2(r+12)-(7(r+12))=0

We multiply parentheses

-2r-(7(r+12))-24=0



We calculate terms in parentheses: -(7(r+12)), so:

7(r+12)

We multiply parentheses

7r+84

Back to the equation:

-(7r+84)



We get rid of parentheses

-2r-7r-84-24=0

We add all the numbers together, and all the variables

-9r-108=0

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

-9r=108

r=108/-9

r=-12

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