Ответ:
Пошаговое (6 1/8-1.75):(9-2.2*(5 6/11-3.5))*1 2/7=45/52
1) 6 1/8-1.75=6 1/8-1 75/100=6 1/8-1 3/4 =4 3/8
2) 5 6/11-3.5=5 6/11-3 5/10=5 6/11-3 5/10=5 6/11- 3 1/2=2 12/22-11/22=2 1/22
3) 2.2*2 1/22=2 2/10*2 1/22=22/10*45/22=9/2=2 1/2
4) 9-2 1/2=6 1/2
5) 4 3/8:6 1/2=35/8*2/13=70/104
6)70/104*1 2/7=70/104*9/7=90/104=45/52
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