90=-5(8r+6)

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Solution for 90=-5(8r+6) equation: 



90=-5(8r+6)

We move all terms to the left:

90-(-5(8r+6))=0



We calculate terms in parentheses: -(-5(8r+6)), so:

-5(8r+6)

We multiply parentheses

-40r-30

Back to the equation:

-(-40r-30)



We get rid of parentheses

40r+30+90=0

We add all the numbers together, and all the variables

40r+120=0

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

40r=-120

r=-120/40

r=-3

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