Question

$\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+\frac{1}{6}=$ cần gấp

Answer 1

`1/2+1/3+1/4+1/5+1/6`

`=(1/2+1/3+1/6)+(1/4+1/5)`

`=(3/6+2/6+1/6)+(5/20+4/20)`

`=6/6+9/20`

`=1+9/20`

`=20/20+9/20`

`=29/20`

Answer 2

\(\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{1}{6}=\dfrac{30}{60}+\dfrac{20}{60}+\dfrac{15}{60}+\dfrac{12}{60}+\dfrac{10}{60}=\dfrac{87}{60}\)