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13+15j=40-4j
We move all terms to the left:
13+15j-(40-4j)=0
We add all the numbers together, and all the variables
15j-(-4j+40)+13=0
We get rid of parentheses
15j+4j-40+13=0
We add all the numbers together, and all the variables
19j-27=0
We move all terms containing j to the left, all other terms to the right
19j=27
j=27/19
j=1+8/19
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