Tolong di bantu dengan cara , terima kasih​

Jawaban:

1.

a. 3:4/1 = 3×4/1 (dikali silang)

= 12/1

= 12

b. 2:1½ = 2: 3/2

= 2×2/3

= 4/3

c. 5:1 3/7 = 5:10/7

= 5×7/10

= 35/10

= 3 5/10

= 3 ½

d. 6/7:4 = 7/6×4

= 28/6

= 4 4/6

= 4 2/3

e. 1 2/5:3 = 7/5:3

= 5/7×3

= 15/7

= 2 1/7

f. 3 4/9:6= 31/9:6

= 9/31×6

= 54/31

= 1 23/31

2.

a. 5/8:3/4 = 5/8×4/3

= 20/24 (sama sama dibagi 4)

= 5/6

b. 2 1/7:3/11 = 15/7 : 3/11

= 15/7 × 11/3

= 165/21

c. ½ : 1 4/9 =½ :13/9

= ½ × 9/13

= 9/26

Maap ya cuma bisa segitu

Semoga membantu:')))