1)0,4*8,5=3,4
2)7,3-3,4=3,9
3)3 1/8-2 1/-2=5/8
4)5/8-1/3=7/8
5)39/10*8/7=156/35 = 4 16/35 (4целых)
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1)0,4*8,5=3,4
2)7,3-3,4=3,9
3)3 1/8-2 1/-2=5/8
4)5/8-1/3=7/8
5)39/10*8/7=156/35 = 4 16/35 (4целых)