3/y-9=12

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Solution for 3/y-9=12 equation: 



3/y-9=12

We move all terms to the left:

3/y-9-(12)=0



Domain of the equation: y!=0

y∈R



We add all the numbers together, and all the variables

3/y-21=0

We multiply all the terms by the denominator


-21*y+3=0

We add all the numbers together, and all the variables

-21y+3=0

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

-21y=-3

y=-3/-21

y=1/7

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