Answer:
All real numbers are solutions.
Step-by-step explanation:
−k−17=−5−k−12
−k+−17=−5+−k+−12
−k−17=(−k)+(−5+−12)
−k−17=−k+−17
−k−17=−k−17
−k−17+k=−k−17+k
−17=−17
−17+17=−17+17
0=0
∴ K = 0
- K -17 = -5 - K -12
- K + K = - 5 - 12 + 17
0 K = -5 + 5
0 K = 0
