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-4-7k=12+k
We simplify the equation to the form, which is simple to understand
-4-7k=12+k
We move all terms containing k to the left and all other terms to the right.
-7k-1k=+12+4
We simplify left and right side of the equation.
-8k=+16
We divide both sides of the equation by -8 to get k.
k=-2
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