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4(k-3)+5k=15
We simplify the equation to the form, which is simple to understand
4(k-3)+5k=15
Reorder the terms in parentheses
+(+4k-12)+5k=15
Remove unnecessary parentheses
+4k-12+5k=+15
We move all terms containing k to the left and all other terms to the right.
+4k+5k=+15+12
We simplify left and right side of the equation.
+9k=+27
We divide both sides of the equation by 9 to get k.
k=3
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