85=-5(4+3r)

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Solution for 85=-5(4+3r) equation: 



85=-5(4+3r)

We move all terms to the left:

85-(-5(4+3r))=0

We add all the numbers together, and all the variables

-(-5(3r+4))+85=0



We calculate terms in parentheses: -(-5(3r+4)), so:

-5(3r+4)

We multiply parentheses

-15r-20

Back to the equation:

-(-15r-20)



We get rid of parentheses

15r+20+85=0

We add all the numbers together, and all the variables

15r+105=0

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

15r=-105

r=-105/15

r=-7

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