3.9(9r=7)=78.7

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Solution for 3.9(9r=7)=78.7 equation: 



3.9(9r=7)=78.7

We move all terms to the left:

3.9(9r-(7))=0

We multiply parentheses

35.1r-27.3=0

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

35.1r=27.3

r=27.3/35.1

r=21/27

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