12 2/5 - 6 1/5 : 7 3/4 = 11.6
1) 6 1/5 : 7 3/4 = 31/5 * 4/31 = 4/5 = 0.8
2) 12 2/5 - 4/5 = 12.4 - 0.8 = 11.6
12 2/5 - 6 1/5 : 7 3/4 = 11.6
1) 6 1/5 : 7 3/4 = 31/5 * 4/31 = 4/5 = 0.8
2) 12 2/5 - 4/5 = 12.4 - 0.8 = 11.6