Jawapan

2016-09-03T16:18:26+08:00
Jalan kiranya ialah 7 - 54/9 = 1
2016-09-03T16:21:54+08:00
7 - 5/4/9 = 6,9/9 - 5,4/9 = 1,5/9 ( satu lima per sembilan )