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-4k-9-3=31
We simplify the equation to the form, which is simple to understand
-4k-9-3=31
We move all terms containing k to the left and all other terms to the right.
-4k=+31+9+3
We simplify left and right side of the equation.
-4k=+43
We divide both sides of the equation by -4 to get k.
k=-10.75
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