Answer:
1 and 4, 2 and 3, 5 and 8, 6 and 7
Step-by-step explanation:
a = -8
4/a + 4 = -1/a + 9
-1(a + 4) = 4(a + 9)
-1a - 4 = 4a + 36
-5a - 4 = 36
-5a = 40
5 + 4 = 9