Pilihan Jawaban a. (21)/(12)=.. 1 (6)/(13), 2 (1)/(4), 1

Pilihan Jawaban a. (21)/(12)=.. 1 (6)/(13), 2 (1)/(4), 1 (9)/(12) , b. (13)/(7)=.. 1 (6)/(7), 2 (5)/(6), 2 (2)/(3), 1 (7)/(8) , 4 (1)/(2), 2 (6)/(9), 1 (2)/(5), 2 (1)/(3)