а) 2 1/6 + 5 14/15 = 2 5/30 + 5 28/30 = 7 33/30 = 8 3/30 = 8 1/10;
б) 4 5/18 - 7/10 = 4 25/90 - 63/90 = 3 115/90 - 63/90 = 3 52/90 = 3 26/45;
в) 6 1/3 + 2 1/15 - 4 7/9 = 6 15/45 + 2 3/45 - 4 35/45 = 8 18/45 - 4 35/45 = 7 63/45 - 4 35/45 = 3 28/45.
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а) 2 1/6 + 5 14/15 = 2 5/30 + 5 28/30 = 7 33/30 = 8 3/30 = 8 1/10;
б) 4 5/18 - 7/10 = 4 25/90 - 63/90 = 3 115/90 - 63/90 = 3 52/90 = 3 26/45;
в) 6 1/3 + 2 1/15 - 4 7/9 = 6 15/45 + 2 3/45 - 4 35/45 = 8 18/45 - 4 35/45 = 7 63/45 - 4 35/45 = 3 28/45.