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-8(8k-7)=-456
We simplify the equation to the form, which is simple to understand
-8(8k-7)=-456
Reorder the terms in parentheses
+(-64k+56)=-456
Remove unnecessary parentheses
-64k+56=-456
We move all terms containing k to the left and all other terms to the right.
-64k=-456-56
We simplify left and right side of the equation.
-64k=-512
We divide both sides of the equation by -64 to get k.
k=8
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