7.0=-9r

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Solution for 7.0=-9r equation: 



7.0=-9r

We move all terms to the left:

7.0-(-9r)=0

We add all the numbers together, and all the variables

-(-9r)+7=0

We get rid of parentheses

9r+7=0

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

9r=-7

r=-7/9

r=-7/9

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