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4-7k=12-3k
We simplify the equation to the form, which is simple to understand
4-7k=12-3k
We move all terms containing k to the left and all other terms to the right.
-7k+3k=+12-4
We simplify left and right side of the equation.
-4k=+8
We divide both sides of the equation by -4 to get k.
k=-2
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