Yes -4 is a interference number
Answer:
X= -6 7/8
Step-by-step explanation:
(9 1/4) + (-6 7/8)= 2 3/8
I believe the next one would be 13.2 because if you add 8.4 to -6.4 it gets 4.8 so you just do the same thing
17, because 9 + 8 = 17.
17 - 8 equals 9
