12=3/2r-9

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Solution for 12=3/2r-9 equation: 



12=3/2r-9

We move all terms to the left:

12-(3/2r-9)=0



Domain of the equation: 2r-9)!=0

r∈R



We get rid of parentheses

-3/2r+9+12=0

We multiply all the terms by the denominator


9*2r+12*2r-3=0

Wy multiply elements

18r+24r-3=0

We add all the numbers together, and all the variables

42r-3=0

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

42r=3

r=3/42

r=1/14

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