(-12)=5r+8

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Solution for (-12)=5r+8 equation: 



(-12)=5r+8

We move all terms to the left:

(-12)-(5r+8)=0

We add all the numbers together, and all the variables

-(5r+8)-12=0

We get rid of parentheses

-5r-8-12=0

We add all the numbers together, and all the variables

-5r-20=0

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

-5r=20

r=20/-5

r=-4

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