hasil dari 5 1per4 kali 2 6 per7 di kurang 10 3 per4 adalah

21...20...15...43....60-43.....17 .....
— × — = — - — = ——— = — =
4......7.....1.....4.......4..........4 .......

hasil :
.....1
4..—
.....4

maap kalo bikin pusing :v

ulangin : 21/4 × 20/7 = 15/1 - 43/4 =17/4 = 4 1/4