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-8+7k+k=-k+7k
We simplify the equation to the form, which is simple to understand
-8+7k+k=-k+7k
We move all terms containing k to the left and all other terms to the right.
+7k+1k+1k-7k=+8
We simplify left and right side of the equation.
+2k=+8
We divide both sides of the equation by 2 to get k.
k=4
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