9j+12=21

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Solution for 9j+12=21 equation: 



9j+12=21

We move all terms to the left:

9j+12-(21)=0

We add all the numbers together, and all the variables

9j-9=0

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

9j=9

j=9/9

j=1

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