12j-7j=15

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Solution for 12j-7j=15 equation: 



12j-7j=15

We move all terms to the left:

12j-7j-(15)=0

We add all the numbers together, and all the variables

5j-15=0

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

5j=15

j=15/5

j=3

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