3/8у + у -1/4 при у=2 2/3;4/9
1) 3/8 х 8/3 + 8/3 - 1/4 = 1 + 8/3 -1/4 = 12/12 + 32/12 - 3/12 =
= (12+32-3)/12 = 41/12 = 3 5/12
2) 3/8 х 4/9 + 4/9 - 1/4 = 1/6 + 4/9 - 1/4 = 6/36 + 16/36 - 9/36 =
= (6+16-9)/36 = 13/36
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1) 3/8 х 8/3 + 8/3 - 1/4 = 1 + 8/3 -1/4 = 12/12 + 32/12 - 3/12 =
= (12+32-3)/12 = 41/12 = 3 5/12
2) 3/8 х 4/9 + 4/9 - 1/4 = 1/6 + 4/9 - 1/4 = 6/36 + 16/36 - 9/36 =
= (6+16-9)/36 = 13/36