-3r-12=-6(7-2r)

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Solution for -3r-12=-6(7-2r) equation: 



-3r-12=-6(7-2r)

We move all terms to the left:

-3r-12-(-6(7-2r))=0

We add all the numbers together, and all the variables

-3r-(-6(-2r+7))-12=0



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

-6(-2r+7)

We multiply parentheses

12r-42

Back to the equation:

-(12r-42)



We get rid of parentheses

-3r-12r+42-12=0

We add all the numbers together, and all the variables

-15r+30=0

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

-15r=-30

r=-30/-15

r=+2

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