Question

Answer 1

`1/3+1/7+1/5+32/40+48/56+14/21`

`=1/3 + 1/7+1/5 + 4/5+6/7+2/3`

`=(1/3+2/3)+(1/7+6/7)+(1/5+4/5)`

`=3/3+7/7+5/5`

`=1+1+1`

`=3`

Answer 2

\(=\dfrac{1}{3}+\dfrac{2}{3}+\dfrac{1}{7}+\dfrac{6}{7}+\dfrac{1}{5}+\dfrac{4}{5}=1+1+1=3\)

Answer 3

\(\dfrac{1}{3}+\dfrac{1}{7}+\dfrac{1}{5}+\dfrac{32}{40}+\dfrac{48}{56}+\dfrac{14}{21}=\dfrac{1}{3}+\dfrac{1}{7}+\dfrac{1}{5}\)\(+\dfrac{4}{5}+\dfrac{6}{7}+\dfrac{2}{3}=\)\(\left(\dfrac{1}{3}+\dfrac{2}{3}\right)+\left(\dfrac{1}{7}+\dfrac{6}{7}\right)+\left(\dfrac{1}{5}+\dfrac{4}{5}\right)\)\(=1+1+1=3\)

Answer 4

=\(\dfrac{1}{3}\)+\(\dfrac{14}{21}\)+\(\dfrac{1}{7}\)+\(\dfrac{48}{56}\)+\(\dfrac{1}{5}\)+\(\dfrac{32}{40}\)

=1+1+1

=3