-5r+1+4=-15

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Solution for -5r+1+4=-15 equation: 



-5r+1+4=-15

We move all terms to the left:

-5r+1+4-(-15)=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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