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9k-7(-7+9k)=-7(9k+2)
We simplify the equation to the form, which is simple to understand
9k-7(-7+9k)=-7(9k+2)
Reorder the terms in parentheses
9k+(+49-63k)=-7*(9k+2)
Remove unnecessary parentheses
+9k+49-63k=-7+*(+9k+2+)
Reorder the terms in parentheses
9k+49-63k=+(-63k-14)
Remove unnecessary parentheses
+9k+49-63k=-63k-14
We move all terms containing k to the left and all other terms to the right.
+9k-63k+63k=-14-49
We simplify left and right side of the equation.
+9k=-63
We divide both sides of the equation by 9 to get k.
k=-7
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