-6r+r=-15

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Solution for -6r+r=-15 equation: 



-6r+r=-15

We move all terms to the left:

-6r+r-(-15)=0

We add all the numbers together, and all the variables

-5r+15=0

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

-5r=-15

r=-15/-5

r=+3

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