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3k+72-33k=0
We simplify the equation to the form, which is simple to understand
3k+72-33k=0
We move all terms containing k to the left and all other terms to the right.
+3k-33k=0-72
We simplify left and right side of the equation.
-30k=-72
We divide both sides of the equation by -30 to get k.
k=2.4
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