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-2(-7k+7)-12k=2(9-7k)
We simplify the equation to the form, which is simple to understand
-2(-7k+7)-12k=2(9-7k)
Reorder the terms in parentheses
+(+14k-14)-12k=2*(9-7k)
Remove unnecessary parentheses
+14k-14-12k=+2+*(+9-7k+)
Reorder the terms in parentheses
+14k-14-12k=+(+18-14k)
Remove unnecessary parentheses
+14k-14-12k=+18-14k
We move all terms containing k to the left and all other terms to the right.
+14k-12k+14k=+18+14
We simplify left and right side of the equation.
+16k=+32
We divide both sides of the equation by 16 to get k.
k=2
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