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5(k+3)=-15
We simplify the equation to the form, which is simple to understand
5(k+3)=-15
Reorder the terms in parentheses
+(+5k+15)=-15
Remove unnecessary parentheses
+5k+15=-15
We move all terms containing k to the left and all other terms to the right.
+5k=-15-15
We simplify left and right side of the equation.
+5k=-30
We divide both sides of the equation by 5 to get k.
k=-6
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