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100=-8k-3(k-4)
We simplify the equation to the form, which is simple to understand
100=-8k-3(k-4)
Reorder the terms in parentheses
100=-8k+(-3k+12)
Remove unnecessary parentheses
+100=-8k-3k+12
We move all terms containing k to the left and all other terms to the right.
+8k+3k=+12-100
We simplify left and right side of the equation.
+11k=-88
We divide both sides of the equation by 11 to get k.
k=-8
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