(0,5:1,25+7/5:1 4/7- 3/11)*3 3 3/55
----------------------------------- =------------------ = 32
(1,5+1/4):18 1/3 20/220
0,5/1,25=0,4
7/5:1 4/7=7/5 : 11/7 = 7/5 * 7/11 = 49/55
0,4+49/55=4/10 + 49/55 = 2/5 + 49/55 = (2 × 11 + 49 × 1)/55 = 22/55 + 49/55 = 71/55 = 1 16/55
1 16/55-3/11=71/55 - 3/11 =(71 × 1 - 3 × 5)/55 = 71/55 - 15/55 = 56/55 = 1 1/55
1 1/55 * 3 = 56/55 * 3 = 168/55 = 3 3/55
1,5+1/4=1,5+0,25=1,75
1,75:18 1/3=1 75/100 : 18 1/3 = 7/4 : 55/3 = 7/4 * 3/55 = 21/220
3 3/55 : 21/220 = 168/55 : 21/220 = 168/55 * 220/21 = 32