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2.5k=-8
We simplify the equation to the form, which is simple to understand
2.5k=-8
We move all terms containing k to the left and all other terms to the right.
+2.5k=-8
We simplify left and right side of the equation.
+2.5k=-8
We divide both sides of the equation by 2.5 to get k.
k=-3.2
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