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12-k=2k-6
We simplify the equation to the form, which is simple to understand
12-k=2k-6
We move all terms containing k to the left and all other terms to the right.
-1k-2k=-6-12
We simplify left and right side of the equation.
-3k=-18
We divide both sides of the equation by -3 to get k.
k=6
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