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