2.73=-0.42r

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Solution for 2.73=-0.42r equation: 



2.73=-0.42r

We move all terms to the left:

2.73-(-0.42r)=0

We get rid of parentheses

0.42r+2.73=0

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

0.42r=-2.73

r=-2.73/0.42

r=-6+0.21/0.42

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