Question

\(\left(\dfrac{4}{5}+\dfrac{1}{2}\right).\left(\dfrac{3}{15}-\dfrac{8}{13}\right)\)

Answer 1

\(=\dfrac{8+5}{10}\cdot\dfrac{39-120}{195}=\dfrac{13}{10}\cdot\dfrac{-81}{195}=\dfrac{1}{15}\cdot\dfrac{-81}{10}=\dfrac{-27}{5\cdot10}=-\dfrac{27}{50}\)

Answer 2

`(4/5+1/2).(3/15-8/13)`

`=(8/10+5/10).(39/195-120/195)`

`=13/10 . -81/195`

`=-27/50`

Answer 3

\(\left(\dfrac{4}{5}+\dfrac{1}{2}\right)\cdot\left(\dfrac{3}{15}-\dfrac{8}{13}\right)\)

 

\(=\dfrac{13}{10}\cdot\left(-\dfrac{27}{65}\right)\)

 

\(=-\dfrac{27}{50}\)

Answer 4

= ( 8/10 + 5/10 ) . (39/195 - 120/195)

= 13/10 . -81/195

= - 27/50