tolong bantuan nya kakak kakak yg baik budi. pakai cara dan 1 sampai 6

3. a. 18/21 = 6/7
b. 28/32 = 7/8
c. 63/77 = 9/11
d. 24/180 = 2/5

5. a. 19/4 = 4 3/4
b. 17/15 = 1 2/15
c. 126/12 = 10 1/2
d. 101/10 = 10 1/10

6. a. 7 3/8 = 59/8
b. 10 3/4 = 43/4
c. 12 1/5 = 61/5
d. 14 1/4 = 57/4