“微信扫一扫”进入题库练习及模拟考试
计算:
参考答案:解:\((2\frac{1}{3} - \frac{7}{6}{\rm{ + }}\frac{1}{{12}}) \times ( - \frac{6}{7})\)\( = \frac{7}{3} \times ( - \frac{6}{7}) - \frac{7}{6} \times ( - \frac{6}{7}){\rm{ + }}\frac{1}{{12}} \times ( - \frac{6}{7})\)\( = - 2 + 1 - \frac{1}{{14}}\)\( = - \frac{{15}}{{14}}\).