Question

\(\dfrac{1}{2}+\dfrac{3}{4}\times\dfrac{-2}{18}+\dfrac{-3}{7}\div\dfrac{9}{-14}\) (giải chi tiết giúp mình nha mọi người)

Answer 1

`(1)/(2)+(3)/(4)xx(-2)/(18)+(-3)/(7):(9)/(-14)`

`=(1)/(2)+(3)/(4)xx(-1)/(9)+(-3)/(7)xx(-14)/(9)`

`=(1)/(2)+(3xx(-1))/(4xx3xx3)+(3xx7xx2)/(7xx3xx3)`

`=(1)/(2)-(1)/(4xx3)+(2)/(3)`

`=(1)/(2)-(1)/(12)+(2)/(3)`

`=(6)/(12)-(1)/(12)+(8)/(12)`

`=(6-1+8)/(12)=13/12`

Answer 2

\(=\dfrac{1}{2}+\dfrac{-1}{12}+\dfrac{-3}{7}\cdot\dfrac{-14}{9}=\dfrac{5}{12}+\dfrac{2}{3}=\dfrac{13}{12}\)