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6j-4j+12=6j-3j+30
We simplify the equation to the form, which is simple to understand
6j-4j+12=6j-3j+30
We move all terms containing j to the left and all other terms to the right.
+6j-4j-6j+3j=+30-12
We simplify left and right side of the equation.
-1j=+18
We divide both sides of the equation by -1 to get j.
j=-18
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