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-3k+5k+3+4k=0
We simplify the equation to the form, which is simple to understand
-3k+5k+3+4k=0
We move all terms containing k to the left and all other terms to the right.
-3k+5k+4k=0-3
We simplify left and right side of the equation.
+6k=-3
We divide both sides of the equation by 6 to get k.
k=-0.5
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