5r+15=85

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Solution for 5r+15=85 equation: 



5r+15=85

We move all terms to the left:

5r+15-(85)=0

We add all the numbers together, and all the variables

5r-70=0

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

5r=70

r=70/5

r=14

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