Вопрос:

Вычислите: (6/5 - 3/4) * 2/3

Фотография

Ответ ассистента

1. $(6/5 - 3/4) \cdot 2/3 = (24/20 - 15/20) \cdot 2/3 = 9/20 \cdot 2/3 = (9 \cdot 2) / (20 \cdot 3) = 18/60 = 3/10$ 2. $(5/4 - 1/2) \cdot 3/7 = (5/4 - 2/4) \cdot 3/7 = 3/4 \cdot 3/7 = 9/28$ 3. $(7/6 + 1/3) \cdot 4/5 = (7/6 + 2/6) \cdot 4/5 = 9/6 \cdot 4/5 = 3/2 \cdot 4/5 = 12/10 = 6/5 = 1,2$ 4. $(3/8 - 1/4) \cdot 5/6 = (3/8 - 2/8) \cdot 5/6 = 1/8 \cdot 5/6 = 5/48$ 5. $(9/10 + 2/5) \cdot 1/2 = (9/10 + 4/10) \cdot 1/2 = 13/10 \cdot 1/2 = 13/20$ 6. $(4/3 - 1/6) \cdot 7/8 = (8/6 - 1/6) \cdot 7/8 = 7/6 \cdot 7/8 = 49/48 = 1 \text{ целая } 1/48$ 7. $(5/6 + 1/2) \cdot 2/9 = (5/6 + 3/6) \cdot 2/9 = 8/6 \cdot 2/9 = 4/3 \cdot 2/9 = 8/27$ 8. $(11/12 - 3/4) \cdot 6/5 = (11/12 - 9/12) \cdot 6/5 = 2/12 \cdot 6/5 = 1/6 \cdot 6/5 = 1/5 = 0,2$ 9. $(8/7 + 1/14) \cdot 3/10 = (16/14 + 1/14) \cdot 3/10 = 17/14 \cdot 3/10 = 51/140$ 10. $(2/5 - 1/10) \cdot 4/3 = (4/10 - 1/10) \cdot 4/3 = 3/10 \cdot 4/3 = 12/30 = 2/5 = 0,4$

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