Question

Dạng 2 : Rút gọn phân số : a)-10/25 ; b) -9/-27

Answer 1

Dạng 2 : Rút gọn phân số : a)-10/25 ; b) -9/-27\(\dfrac{-10:5}{25:5}=\dfrac{-2}{5}\)\(\dfrac{-9:\left(-9\right)}{-27:\left(-9\right)}=\dfrac{1}{3}\)

Answer 2

`a,-10/25=(-2 xx 5)/(5 xx 5)=-2/5`

`b,(-9)/(-27)=(-9 xx 1)/(-9 xx 3)=1/3`

Answer 3

a) \(\dfrac{-10}{25}=\dfrac{-10:5}{25:5}=\dfrac{-2}{5}\)

b) \(\dfrac{-9}{-27}=\dfrac{-9:\left(-9\right)}{-27:\left(-9\right)}=\dfrac{1}{3}\)

Answer 4

 a)\(\dfrac{\text{-10}}{\text{25}}\) =\(\dfrac{\text{-10:5}}{\text{25:5}}\)=\(\dfrac{-2}{5}\)

 b) \(\dfrac{\text{-9}}{\text{-27}}\)=\(\dfrac{-9:\left(-9\right)}{\text{-27}:\left(-9\right)}\)=\(\dfrac{1}{3}\)

Answer 5

Answer 6

a) \(\dfrac{-10}{25}=\dfrac{-10:5}{25:5}=\dfrac{-2}{5}\)

b) \(\dfrac{-9}{-27}=\dfrac{-9:\left(-3\right)}{-27:\left(-3\right)}=\dfrac{1}{3}\)