Ответ:
Пример 1
3 3/11:18+100:25/36-5 1/6:1 1/30= 139 2/11
1) 36/11:18= 36/11*1/18=2/1*1/11=2/11
2)100/1:25/36=100/1*36/25=4/1*36/1=144/1=144
3)31/6:1 1/3= 31/6*30/31=1/1*5/1=5/1=5
4) 2/11+144/1=2+1584/11=1586/11=144 2/11
5) 144 2/11-5=139 2/11
Пример 2
12 3/5:21/25-17/20:1,19+3 1/17:1 1/51= 11 2/7
1) 12 3/5:21/25= 63/5*25/21=15/1=15
2) 17/20:1 19/100=17/20*100/119=5\7
3) 3 1/17:1 1/51=52/17*51/52=3/1=3
4) 15 - 5/7= 105-5/7=100/7=14 2/7
5)14 2/7-3=11 2/7