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124=-5(4k-4)+7k
We simplify the equation to the form, which is simple to understand
124=-5(4k-4)+7k
Reorder the terms in parentheses
124=+(-20k+20)+7k
Remove unnecessary parentheses
+124=-20k+20+7k
We move all terms containing k to the left and all other terms to the right.
+20k-7k=+20-124
We simplify left and right side of the equation.
+13k=-104
We divide both sides of the equation by 13 to get k.
k=-8
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