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-20+3k=k-3k
We simplify the equation to the form, which is simple to understand
-20+3k=k-3k
We move all terms containing k to the left and all other terms to the right.
+3k-1k+3k=+20
We simplify left and right side of the equation.
+5k=+20
We divide both sides of the equation by 5 to get k.
k=4
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