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3j-15=7+7j
We move all terms to the left:
3j-15-(7+7j)=0
We add all the numbers together, and all the variables
3j-(7j+7)-15=0
We get rid of parentheses
3j-7j-7-15=0
We add all the numbers together, and all the variables
-4j-22=0
We move all terms containing j to the left, all other terms to the right
-4j=22
j=22/-4
j=-5+1/2
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