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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