-2.73=-4.2r

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Solution for -2.73=-4.2r equation: 



-2.73=-4.2r

We move all terms to the left:

-2.73-(-4.2r)=0

We get rid of parentheses

4.2r-2.73=0

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

4.2r=2.73

r=2.73/4.2

r=1/1.5384615384615

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