8r+7=-8+5r+7r

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



8r+7=-8+5r+7r

We move all terms to the left:

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

We add all the numbers together, and all the variables

8r-(12r-8)+7=0

We get rid of parentheses

8r-12r+8+7=0

We add all the numbers together, and all the variables

-4r+15=0

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

-4r=-15

r=-15/-4

r=3+3/4

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