Question

(3 3/5 - 1 2/3) ÷(4 1/15 - 2 7/9) × 2 3/5
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Answer 1

$\displaystyle (3\frac{3}{5}-1\frac{2}{3}):(4\frac{1}{15}-2\frac{7}{9})*2\frac{3}{5}=(\frac{18}{5}-\frac{5}{3}):(\frac{61}{15} -\frac{25}{9})*\frac{13}{5}=\frac{29}{15}:\frac{58}{45}*\frac{13}{5}=\\ \\ \frac{29}{15}*\frac{45}{58}*\frac{13}{5}=\frac{3}{2}*\frac{13}{5}=\frac{39}{10}=3\frac{9}{10}=3,9$

Answer 2

Ответ:

Пошаговое объяснение:

1) 3. 3/5 - 1. 2/3 = 3. 9/15 -

1. 10/15 = 2. 24/15 - 1. 10/15 = 1. 14/15

2) 4. 1/15 - 2. 7/9 = 4. 3/45 - 2. 35/45 = 3. 48/45 - 2. 35/45 = 1. 13/45

3) 1. 14/15 : 1. 13/45 = 29/15 : 58/45 = 29/15 * 45/58 = 1/1 * 3/2 = 3/2

4) 3/2 * 2. 3/5 = 3/2 * 13/5 = 39/10 = 3. 9/10 или 3,9