7-8r=-6r+15

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Solution for 7-8r=-6r+15 equation: 



7-8r=-6r+15

We move all terms to the left:

7-8r-(-6r+15)=0

We get rid of parentheses

-8r+6r-15+7=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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