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3(-5k+4)-6=-84
We simplify the equation to the form, which is simple to understand
3(-5k+4)-6=-84
Reorder the terms in parentheses
+(-15k+12)-6=-84
Remove unnecessary parentheses
-15k+12-6=-84
We move all terms containing k to the left and all other terms to the right.
-15k=-84-12+6
We simplify left and right side of the equation.
-15k=-90
We divide both sides of the equation by -15 to get k.
k=6
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