Question

\(1\dfrac{3}{7}\)-\(\dfrac{7}{8}\)+\(2\dfrac{4}{5}\):2=

 

Answer 1

`1 3/7- 7/8 + 2 4/5 :2`

`= (1xx7+3)/7 - 7/8 + (2xx5+4)/5 xx 1/2`

`= 10/7 - 7/8 + 14/5 xx 1/2`

`= 10/7 - 7/8 +14/10`

`= 10/7 - 7/8 +7/5`

`= 80/56 - 49/56 +7/5`

`= 31/56 +  7/5`

`= 155/280 + 392/280`

`= 547/280`

 

 

Answer 2

\(=\dfrac{10}{7}-\dfrac{7}{8}+\dfrac{14}{5}:2\)

\(=\dfrac{10}{7}-\dfrac{7}{8}+\dfrac{7}{5}=\dfrac{31}{56}+\dfrac{7}{5}=\dfrac{547}{280}\)