3/(-j)+12=21

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Solution for 3/(-j)+12=21 equation: 



3/(-j)+12=21

We move all terms to the left:

3/(-j)+12-(21)=0



Domain of the equation: (-j)!=0

j!=0/-1

j!=0

j∈R



We add all the numbers together, and all the variables

3/(-1j)+12-21=0

We add all the numbers together, and all the variables

3/(-1j)-9=0

We multiply all the terms by the denominator


-9*(-1j)+3=0

We multiply parentheses

9j+3=0

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

9j=-3

j=-3/9

j=-1/3

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