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2k-7k=15
We simplify the equation to the form, which is simple to understand
2k-7k=15
We move all terms containing k to the left and all other terms to the right.
+2k-7k=+15
We simplify left and right side of the equation.
-5k=+15
We divide both sides of the equation by -5 to get k.
k=-3
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