7r+10=15

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Solution for 7r+10=15 equation: 



7r+10=15

We move all terms to the left:

7r+10-(15)=0

We add all the numbers together, and all the variables

7r-5=0

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

7r=5

r=5/7

r=5/7

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