8 - 4 31/100 -2 57/100 = 8 - (4 31/100 +2 57/100) = 8 - 6 (31+57)/100 =
=8 - 2 88 /100 = 1 12/100 = 1 3/25
А) 43х = 903
х = 903/43
х = 21
б) х/56 = 65
х = 56*65
х = 3640
в) 24 - 462/х = 2
462/х = 24-2
462/х = 22
х = 462/22
х = 21
А
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а) 5 - 1 5/6 = 4 6/6 - 1 5/6 = 3 1/6
в) 3 5/6 -1,5 - 2 1/3 = 0
1) 3 5/6 - 1 5/10 = 3 5/6 -1 1/2 = 2 2/6 = 2 1/3
2) 2 1/3 - 2 1/3 = 0