Предмет: Математика, автор: марго409

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Автор ответа: lenapanova

(дополнит. множители)
20 12 5
1) a + b - c = 1/3 + 4/5 - 1/12 = 20+48-5/60 = 63/60 = 1ц 1/20

54 63 42
2) a - b + c = 2/7 - 1/6 + 1/9 = 108-63-42/378 = 87/378= 4ц 5/63

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