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k+4-3(k-12)=0
We simplify the equation to the form, which is simple to understand
k+4-3(k-12)=0
Reorder the terms in parentheses
k+4+(-3k+36)=0
Remove unnecessary parentheses
+k+4-3k+36=0
We move all terms containing k to the left and all other terms to the right.
+1k-3k=0-4-36
We simplify left and right side of the equation.
-2k=-40
We divide both sides of the equation by -2 to get k.
k=20
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