-28-21r=-24

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Solution for -28-21r=-24 equation: 



-28-21r=-24

We move all terms to the left:

-28-21r-(-24)=0

We add all the numbers together, and all the variables

-21r-4=0

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

-21r=4

r=4/-21

r=-4/21

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