17 - (-6) = 23
Therefore, the number you have to add to -6 to make 17 is 23.
Wiki User
∙ 12y agoYou need to add 12.
You need to add 6 - (-9) = 6 + 9 = 15.
6+17=23
17
17
17
You need to add 7 (or +7)
12
Add 11 -6 + 11 = 5
17
- 8 + 17 = 9 =========
They all add up to 48