Question

Can anyone please help me with these math problems pretty please with a cherry on top 15-17

Answer 1

13.=6
14.=0
15.=14
16.=10
17.=10

Answer 2

15. 2 - (-12) → 2 + 12 = 14.
16. -13 - (-23) → -13 + 23 = 10.
17. 1 - (-9) → 1 + 9 = 10.