-88=-4(1+3r)

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Solution for -88=-4(1+3r) equation: 



-88=-4(1+3r)

We move all terms to the left:

-88-(-4(1+3r))=0

We add all the numbers together, and all the variables

-(-4(3r+1))-88=0



We calculate terms in parentheses: -(-4(3r+1)), so:

-4(3r+1)

We multiply parentheses

-12r-4

Back to the equation:

-(-12r-4)



We get rid of parentheses

12r+4-88=0

We add all the numbers together, and all the variables

12r-84=0

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

12r=84

r=84/12

r=7

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