Question

galera vcz podem me ajudar com essas

Answer 1

15- 9.9/7 (9.9=81) 81/7
16-2/3.4/5 (2.4= 8) (3.5= 15) =8/15
17- 1/3.4/7 (1.4=4) (3.7=21)= 4/21
18- 7/8.3/2 (7.3= 21) (8.2=16)= 21/16
19-3/5.5/9 (3.5=15) (5.9=45)= 15/45
20-2/7.21/2 (2.21=42) (7.2=14)= 42/14