第33页

信息发布者：
C
$10$
相等
$12$
$-20$
解：原式​$=\frac {10}{3}×(-\frac {6}{5})$​
​$=-4$​
解：原式​$=-\frac {8}{3}×(-\frac {9}{4})$​
​$=6$​
解​$：$​原式​$= 0$​
解：原式​$=-\frac {15}{4}×(-\frac {10}{3})$​
​$=\frac {25}{2}$​
解：原式​$=-\frac {9}{4}×\frac {7}{4}×\frac {2}{3}×\frac {8}{7}$​
​$=-3$​
解：原式​$=\frac 12×\frac 23×\frac 94×(-\frac {16}{3})$​
​$=-4$​
解：原式​$ = (-\frac {2024}{2025})×(-\frac {2023}{2024}) × (-\frac {2022}{2023}) × (-\frac {2021}{2022}) ×(-\frac {2020}{2021})×··· × (-\frac {2}{3}) × (-\frac {1}{2}) $​
​$=\frac {2024}{2025}×\frac {2023}{2024}× \frac {2022}{2023} ×\frac {2021}{2022}×\frac {2020}{2021}×···×\frac {2}{3}×\frac {1}{2} $​
​$=\frac {1}{2025}$​
上一页 下一页