(5 5/9 - 6.8):(2 13/30 - 2 1/12)*3.6 = -12.8
1) 5 5/9 - 6.8 = 5 5/9 - 6 8/10 = 5 50/90 - 6 72/90 = -1 11/45
2) 2 13/30 - 2 1/12 = 2 26/60 - 2 5/60 = 7/20 = 0.35
3) -1 11/45 : 7/20 = -56/45 * 20/7 = -3 5/9
4) -3 5/9 * 3.6 = -64/5 = -12.8
(5 5/9 - 6.8):(2 13/30 - 2 1/12)*3.6 = -12.8
1) 5 5/9 - 6.8 = 5 5/9 - 6 8/10 = 5 50/90 - 6 72/90 = -1 11/45
2) 2 13/30 - 2 1/12 = 2 26/60 - 2 5/60 = 7/20 = 0.35
3) -1 11/45 : 7/20 = -56/45 * 20/7 = -3 5/9
4) -3 5/9 * 3.6 = -64/5 = -12.8