3/b+9=12

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Solution for 3/b+9=12 equation: 



3/b+9=12

We move all terms to the left:

3/b+9-(12)=0



Domain of the equation: b!=0

b∈R



We add all the numbers together, and all the variables

3/b-3=0

We multiply all the terms by the denominator


-3*b+3=0

We add all the numbers together, and all the variables

-3b+3=0

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

-3b=-3

b=-3/-3

b=1

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