-4r-3=-15

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Solution for -4r-3=-15 equation: 



-4r-3=-15

We move all terms to the left:

-4r-3-(-15)=0

We add all the numbers together, and all the variables

-4r+12=0

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

-4r=-12

r=-12/-4

r=+3

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