Answer:
shown below
Step-by-step explanation:
18) 4 x 1 = 4, 7 x 2 = 14, 4/14
19) 15 x 2 = 30, 2 x 20 = 40, 30/40
20) 3 x 7 = 21, 6 x 8 = 48, 21/48
21) 9 x 1 = 9, 10 x 2 = 20, 9/20
22) 3 x 2 = 6, 6 x 4 = 24, 6/24
