a) $\frac{3}{2} - \frac{1}{6} - \frac{5}{6} = \frac{9}{6} - \frac{1}{6} - \frac{5}{6} = \frac{{9 - 1 - 5}}{6} = \frac{3}{6} = \frac{1}{2}$
b) $1 - \frac{1}{3} - \frac{2}{3} = \frac{3}{3} - \frac{1}{3} - \frac{2}{3} = \frac{{3 - 1 - 2}}{3} = 0$
Đúng 0
Bình luận (0)