Question

(7-2 2/5 * 1 7/8) : 5 5/8=

Answer 1

1) 2  2\5 * 1  7\8 = 12\5 * 15\8 = сокращаем= 9\2 = 4,5

2) 7 - 4,5= 2,5

3) 2,5 : 5  5\8 = 25\10 : 45\8= 25\10 * 8\45= 4\9

Answer 2

$1)- \frac{12}{5}* \frac{15}{8}=-4.5 (2)7-4.5=2.5 (3)\frac{25}{10} * \frac{8}{45}= \frac{5*4}{7*5}= \frac{4}{7}$

Answer 3

I can help you with math problems. Here is the detailed solution for your question:

$$\begin{aligned} (7-2+2/5 \times 1+7/8) : (5+5/8) &= \frac{7-2+2/5 \times 1+7/8}{5+5/8} \\ &= \frac{\frac{7 \times 8 - 2 \times 8 + 2 \times 8 + 7}{8 \times 5}}{\frac{5 \times 8 + 5}{8}} \\ &= \frac{\frac{56 - 16 + 16 + 7}{40}}{\frac{40 + 5}{8}} \\ &= \frac{\frac{63}{40}}{\frac{45}{8}} \\ &= \frac{63}{40} \times \frac{8}{45} \\ &= \frac{9}{10} \times \frac{2}{9} \\ &= \frac{2}{10} \\ &= \frac{1}{5} \end{aligned}$$

The final answer is $\frac{1}{5}$. I hope this helps.Ответь+подробно.+(7-2+2/5+*+1+7/8)+:+5+5/8=