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-7k-5(-7k+7)=-3+4(7-8k)
We simplify the equation to the form, which is simple to understand
-7k-5(-7k+7)=-3+4(7-8k)
Reorder the terms in parentheses
-7k+(+35k-35)=-3+4*(7-8k)
Remove unnecessary parentheses
-7k+35k-35=-3+4+*(+7-8k+)
Reorder the terms in parentheses
-7k+35k-35=-3+(+28-32k)
Remove unnecessary parentheses
-7k+35k-35=-3+28-32k
We move all terms containing k to the left and all other terms to the right.
-7k+35k+32k=-3+28+35
We simplify left and right side of the equation.
+60k=+60
We divide both sides of the equation by 60 to get k.
k=1
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