tolong dijawab yaaaa nomor 9 soalnya aku ga nemu jawabannya terima kasih

9. 13 5/6 + 6 2/9
   = 83/6 + 56/9 = 249/18 + 112/18 = 361/18 = 20 1/18 (C)

13 5/6 + 6 2/9 =.....

13 + 6 = 19
5/6 + 2/9 = 15/18 + 4/18 = 19/18 = 1 1/18

jadi, 19 + 1 1/18 = 20 1/18 (C)