Pakai cara!!tolong kerjainn 18 dan 19’besok dikumpull!!

18. 2/3 ÷ 5/10
= 2/3 x 10/5
= 20/15 x 12/100
= 240/1500
= 16/100
= 16%
19. 1 3/4 : 2 1/4 + 1 1/3 =
= 7/4 : 9/4 + 4/3
= 7/4 x 4/9 + 4/3
= 28/36 + 4/3
= 28/36 + 48/36
= 76/36
= 2 4/36
= 2 1/9