Ответ:
Пошаговое объяснение:
1) 1/75 × 75 = 1
2) 20× 23/60 = 23/3 = 7 2/3
3) 2 1/2 × 1 3/5 = 5/2 * 8/5 = 4
4) 9/10 × 1 1/9 = 9/10 * 10/9 = 1
5) (20 1/2 + 12 3/5) × 1/10 = (20 5/10 + 12 6/10) * 1/10 = (205/10 + 126/10)*1/10 = 331/10 * 1/10 = 331/100 = 3 31/100
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Ответ:
Пошаговое объяснение:
1) 1/75 × 75 = 1
2) 20× 23/60 = 23/3 = 7 2/3
3) 2 1/2 × 1 3/5 = 5/2 * 8/5 = 4
4) 9/10 × 1 1/9 = 9/10 * 10/9 = 1
5) (20 1/2 + 12 3/5) × 1/10 = (20 5/10 + 12 6/10) * 1/10 = (205/10 + 126/10)*1/10 = 331/10 * 1/10 = 331/100 = 3 31/100