-9=r/4-8

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Solution for -9=r/4-8 equation: 



-9=r/4-8

We move all terms to the left:

-9-(r/4-8)=0

We get rid of parentheses

-r/4+8-9=0

We multiply all the terms by the denominator


-r+8*4-9*4=0

We add all the numbers together, and all the variables

-1r-4=0

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

-r=4

r=4/-1

r=-4

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