9(k - 5) - 12= 7k -(-6 - 2k)
Steps
First, expand 9(k - 5) - 12: 9k - 57
and expand 7k - (-6 - 2k): 9k + 6
which is...
9k - 57 = 9k + 6
Next, add 57 to both sides
9k - 57 + 57 = 9k + 6 + 57
Then simplify,
9k = 9k + 63
Next, subtract 9k from both sides
9k - 9k = 9k + 63 - 9k
Simplify,
0 = 63
The final answer is that the sides aren't equal... which is no solution.