Ответ №1
23). 3 5/16 -1/4 – 1 1/16 = (48+5)/16 – 4/16 – 17/16 = (53-4-17)/16
= 32/16 = 2
24). 5 11/12 – 2 1/6 – 1 ¼ = 71/12 – 13/6 – 5/4 = 71/12 –
26/12 – 15/12 = 30/12 = 15/6 = 5/2 = 2 1/2
25). 1/8 + 1 3/5 + 2 7/8 = 1/8 + 8/5 + 23/8 = 5/40 + 64/40 +
(23Х5)/40 = (5+64+23Х5)/40 = 184/40 = 23/5 = 4 3/5
26).2 7/9 – 1 5/18 + 5 ½ = 25/9 – 23/18 + 11/2 = 50/18 – 23/18
+ 99/18 = 126/18 = 7
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