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(0.707-j0.707)(-1-3j)=0
We add all the numbers together, and all the variables
(-j0.707+0.707)(-3j-1)=0
We multiply parentheses ..
(+3j+j-2.121j-0.707)=0
We add all the numbers together, and all the variables
(1.879j-0.707)=0
We get rid of parentheses
1.879j-0.707=0
We move all terms containing j to the left, all other terms to the right
1.879j=0.707
j=0.707/1.879
j=0.707/1.879
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