Nối phép tính đúng: 3/4 + 1/8

Nối.

Giải thích

\[\frac{3}{4} + \frac{1}{8} = \frac{6}{8} + \frac{1}{8} = \frac{7}{8}\]

\[\frac{3}{2} + \frac{3}{8} = \frac{{12}}{8} + \frac{3}{8} = \frac{{15}}{8}\]

\[\frac{5}{{18}} + \frac{5}{6} = \frac{5}{{18}} + \frac{{15}}{{18}} = \frac{{20}}{{18}} = \frac{{10}}{9}\]

\[\frac{9}{{40}} + \frac{2}{5} = \frac{9}{{40}} + \frac{{16}}{{40}} = \frac{{25}}{{40}} = \frac{5}{8}\]