-3=-8+r/4

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Solution for -3=-8+r/4 equation: 



-3=-8+r/4

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(r/4-8)-3=0

We get rid of parentheses

-r/4+8-3=0

We multiply all the terms by the denominator


-r+8*4-3*4=0

We add all the numbers together, and all the variables

-1r+20=0

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

-r=-20

r=-20/-1

r=+20

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