Đáp án:
$\frac{1}{2}$ + $\frac{1}{3}$ + $\frac{1}{4}$ + $\frac{1}{5}$ + $\frac{1}{6}$
= $\frac{30}{60}$ + $\frac{20}{60}$ + $\frac{15}{60}$ + $\frac{12}{60}$ + $\frac{10}{60}$
= $\frac{50}{60}$ + $\frac{15}{60}$ + $\frac{12}{60}$ + $\frac{10}{60}$
= $\frac{65}{60}$ + $\frac{12}{60}$ + $\frac{10}{60}$
= $\frac{77}{60}$ + $\frac{10}{60}$
= $\frac{87}{60}$ = $\frac{29}{20}$.
#_Kaiz_
