1) 8,31-(64,784+9,999) : 9,01 + 1 :2,5 + 2: 1,25

2)(0,872 : 2,18+4,578 : 3,27)  3,02-2,707
3)28,1-36,8 : (50,08+49,92)-36,8 : (48,65-38,65)
Дам 20 балов

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