92=-4(5+4r)

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Solution for 92=-4(5+4r) equation: 



92=-4(5+4r)

We move all terms to the left:

92-(-4(5+4r))=0

We add all the numbers together, and all the variables

-(-4(4r+5))+92=0



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

-4(4r+5)

We multiply parentheses

-16r-20

Back to the equation:

-(-16r-20)



We get rid of parentheses

16r+20+92=0

We add all the numbers together, and all the variables

16r+112=0

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

16r=-112

r=-112/16

r=-7

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