Solve for j
j=3
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-12=-4j
Variable j cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by j.
-4j=-12
Swap sides so that all variable terms are on the left hand side.
j=\frac{-12}{-4}
Divide both sides by -4.
j=3
Divide -12 by -4 to get 3.
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