tolong kaka caranya adalah mkcih...

a. 6/10 : 2/2 = 3/5
6/10 x 10 =60/100
b. 11/33:11/11 = 1/3
11/33 x 33/33 = 366/ 1089
c. 12/15 : 3/3 = 4/5
12/15 x 15/15 = 180/ 225
d. 24/60 : 12/12 = 2/5
24/60 x 60/60 = 1440/3600
e. 20/30 : 10/10 = 2/3
20/30 x 30/30 = 600/900
f. 18/24 : 6/6 = 3/4
18/24 x 24/24 = 432/576

begini bukan?