90=-6(4r+5)

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Solution for 90=-6(4r+5) equation: 



90=-6(4r+5)

We move all terms to the left:

90-(-6(4r+5))=0



We calculate terms in parentheses: -(-6(4r+5)), so:

-6(4r+5)

We multiply parentheses

-24r-30

Back to the equation:

-(-24r-30)



We get rid of parentheses

24r+30+90=0

We add all the numbers together, and all the variables

24r+120=0

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

24r=-120

r=-120/24

r=-5

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