91=8(r+4)+3

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Solution for 91=8(r+4)+3 equation: 



91=8(r+4)+3

We move all terms to the left:

91-(8(r+4)+3)=0



We calculate terms in parentheses: -(8(r+4)+3), so:

8(r+4)+3

We multiply parentheses

8r+32+3

We add all the numbers together, and all the variables

8r+35

Back to the equation:

-(8r+35)



We get rid of parentheses

-8r-35+91=0

We add all the numbers together, and all the variables

-8r+56=0

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

-8r=-56

r=-56/-8

r=+7

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