Question

Tính.

a) $\frac{1}{2} - \frac{1}{4}$                                   

b) $\frac{2}{3} - \frac{4}{{15}}$                             

c) $\frac{3}{5} - \frac{{10}}{{25}}$

Answer 1

a) $\frac{1}{2} - \frac{1}{4} = \frac{2}{4} - \frac{1}{4} = \frac{1}{4}$   

b) $\frac{2}{3} - \frac{4}{{15}} = \frac{{10}}{{15}} - \frac{4}{{15}} = \frac{6}{{15}} = \frac{2}{5}$                       

c) $\frac{3}{5} - \frac{{10}}{{25}} = \frac{{15}}{{25}} - \frac{{10}}{{25}} = \frac{5}{{25}} = \frac{1}{5}$