r+340=-8r+7

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Solution for r+340=-8r+7 equation: 



r+340=-8r+7

We move all terms to the left:

r+340-(-8r+7)=0

We get rid of parentheses

r+8r-7+340=0

We add all the numbers together, and all the variables

9r+333=0

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

9r=-333

r=-333/9

r=-37

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