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-8k+7-3+4k=0
We simplify the equation to the form, which is simple to understand
-8k+7-3+4k=0
We move all terms containing k to the left and all other terms to the right.
-8k+4k=0-7+3
We simplify left and right side of the equation.
-4k=-4
We divide both sides of the equation by -4 to get k.
k=1
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