8r+4-3r=-15

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Solution for 8r+4-3r=-15 equation: 



8r+4-3r=-15

We move all terms to the left:

8r+4-3r-(-15)=0

We add all the numbers together, and all the variables

5r+19=0

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

5r=-19

r=-19/5

r=-3+4/5

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