Пошаговое объяснение:
2 3/4 = (2*4 + 3)/4 = (8 + 3)/4 = 11/4
4 1/3 = (4*3 + 1)/3 = (12 + 1)/3 = 13/3
3 4/7 = (3*7 + 4)/7 = (21 + 4)/7 = 25/7
1 7/8 = (1*8 + 7)/8 = (8 + 7)/8 = 15/8
2 12/15 = (2*15 + 12)/15 = (30 + 12)/15 = 42/15
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Пошаговое объяснение:
2 3/4 = (2*4 + 3)/4 = (8 + 3)/4 = 11/4
4 1/3 = (4*3 + 1)/3 = (12 + 1)/3 = 13/3
3 4/7 = (3*7 + 4)/7 = (21 + 4)/7 = 25/7
1 7/8 = (1*8 + 7)/8 = (8 + 7)/8 = 15/8
2 12/15 = (2*15 + 12)/15 = (30 + 12)/15 = 42/15