12=-7j-9

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Solution for 12=-7j-9 equation: 



12=-7j-9

We move all terms to the left:

12-(-7j-9)=0

We get rid of parentheses

7j+9+12=0

We add all the numbers together, and all the variables

7j+21=0

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

7j=-21

j=-21/7

j=-3

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