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-8k-3k=12-7k
We simplify the equation to the form, which is simple to understand
-8k-3k=12-7k
We move all terms containing k to the left and all other terms to the right.
-8k-3k+7k=+12
We simplify left and right side of the equation.
-4k=+12
We divide both sides of the equation by -4 to get k.
k=-3
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