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-28j+78=-2j
We move all terms to the left:
-28j+78-(-2j)=0
We get rid of parentheses
-28j+2j+78=0
We add all the numbers together, and all the variables
-26j+78=0
We move all terms containing j to the left, all other terms to the right
-26j=-78
j=-78/-26
j=+3
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