7r+8=-2r-64

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Solution for 7r+8=-2r-64 equation: 



7r+8=-2r-64

We move all terms to the left:

7r+8-(-2r-64)=0

We get rid of parentheses

7r+2r+64+8=0

We add all the numbers together, and all the variables

9r+72=0

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

9r=-72

r=-72/9

r=-8

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