Question

Tính bằng cách thuận tiện:

13/7 + 5/6 + 1/7 + 7/6=

Answer 1

`13/7+5/6+1/7+7/6`

`=(13/7+1/7)+(5/6+7/6)`

`=14/7+12/6`

`=2+2`

`=4`

Answer 2

\(\dfrac{13}{7}+\dfrac{5}{6}+\dfrac{1}{7}+\dfrac{7}{6}\)
\(=\left(\dfrac{13}{7}+\dfrac{1}{7}\right)+\left(\dfrac{5}{6}+\dfrac{7}{6}\right)\)
\(=2+2\)
\(=4\)

Answer 3

\(\dfrac{13}{7}+\dfrac{5}{6}+\dfrac{1}{7}+\dfrac{7}{6}\)

\(=\left(\dfrac{13}{7}+\dfrac{1}{7}\right)+\left(\dfrac{5}{6}+\dfrac{7}{6}\right)\)

\(=2+2\)

\(=4\)

Chúc bạn học tốt