45.31=-19.7r

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Solution for 45.31=-19.7r equation: 



45.31=-19.7r

We move all terms to the left:

45.31-(-19.7r)=0

We get rid of parentheses

19.7r+45.31=0

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

19.7r=-45.31

r=-45.31/19.7

r=-2+3.0942408376963/10.314136125654

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