10r-7=8+5r

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Solution for 10r-7=8+5r equation: 



10r-7=8+5r

We move all terms to the left:

10r-7-(8+5r)=0

We add all the numbers together, and all the variables

10r-(5r+8)-7=0

We get rid of parentheses

10r-5r-8-7=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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