12 3/8 = 4 1/2 - 1,125 + а (4 1/2 = 4,5) (12 3/8 = 12,375)
12,375 = 4,5 - 1,125 + а
3,375 + а = 12,375
а = 12,375 - 3,375
а = 9
(4 1/2 = 4,5) (12 3/8 = 12,375)
Пошаговое объяснение:
12 3/8 = 4 1/2 - 1,125 + а (4 1/2 = 4,5) (12 3/8 = 12,375)
12,375 = 4,5 - 1,125 + а
3,375 + а = 12,375
а = 12,375 - 3,375
а = 9
(4 1/2 = 4,5) (12 3/8 = 12,375)
Пошаговое объяснение: