5r=8+7r

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Solution for 5r=8+7r equation: 



5r=8+7r

We move all terms to the left:

5r-(8+7r)=0

We add all the numbers together, and all the variables

5r-(7r+8)=0

We get rid of parentheses

5r-7r-8=0

We add all the numbers together, and all the variables

-2r-8=0

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

-2r=8

r=8/-2

r=-4

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