1/3(9r+18)=21

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Solution for 1/3(9r+18)=21 equation: 



1/3(9r+18)=21

We move all terms to the left:

1/3(9r+18)-(21)=0



Domain of the equation: 3(9r+18)!=0

r∈R



We multiply all the terms by the denominator


-21*3(9r+18)+1=0

Wy multiply elements

-63r(9+1=0

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