Question

Tính.

a) \(7+\dfrac{1}{5}\)                   b) \(\dfrac{14}{5}+1\)                 c) \(3-\dfrac{11}{8}\)               d) \(\dfrac{31}{10}-2\)

Answer 1

a) $7 + \frac{1}{5} = \frac{{35}}{5} + \frac{1}{5} = \frac{{36}}{5}$

b) $\frac{{14}}{5} + 1 = \frac{{14}}{5} + \frac{5}{5} = \frac{{19}}{5}$          

c) $3 - \frac{{11}}{8} = \frac{{24}}{8} - \frac{{11}}{8} = \frac{{13}}{8}$   

d) $\frac{{31}}{{10}} - 2 = \frac{{31}}{{10}} - \frac{{20}}{{10}} = \frac{{11}}{{10}}$