Evaluate `(a+b)/c`
For: `a = -3, b = -6, and c = 6`.
Write your answer as an integer or reduced fraction.

Box 1: Enter your answer as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2)
Do not enter mixed numbers
Enter DNE for Does Not Exist, oo for Infinity