-(r-1)=-3(4r+7)

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Solution for -(r-1)=-3(4r+7) equation: 



-(r-1)=-3(4r+7)

We move all terms to the left:

-(r-1)-(-3(4r+7))=0

We get rid of parentheses

-r-(-3(4r+7))+1=0



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

-3(4r+7)

We multiply parentheses

-12r-21

Back to the equation:

-(-12r-21)



We add all the numbers together, and all the variables

-1r-(-12r-21)+1=0

We get rid of parentheses

-1r+12r+21+1=0

We add all the numbers together, and all the variables

11r+22=0

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

11r=-22

r=-22/11

r=-2

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