24/36;25/100;143/132;250/750 rut gon duoc bang

` # Chớp# ` 

$\dfrac{24}{36}$ `=` $\dfrac{24 : 12}{36 : 12 }$ `=` $\dfrac{2}{3}$

$\dfrac{25}{100}$ `=` $\dfrac{25 : 25}{100 : 25}$ `=` $\dfrac{1}{4}$

$\dfrac{143}{132 }$`=` $\dfrac{143 : 11}{132 : 11}$ `=` $\dfrac{13}{12}$

$\dfrac{250}{750}$ `=` $\dfrac{250 : 250}{750 : 250 }$ `=` $\dfrac{1}{3}$

`=>` Các phân số : $\dfrac{24}{36}$, $\dfrac{25}{100}$, $\dfrac{143}{132 }$, $\dfrac{250}{750}$ rút gọn được : $\dfrac{2}{3}$, $\dfrac{1}{4}$, $\dfrac{13}{12}$, $\dfrac{1}{3}$

`24/36 = (24:12)/(36:12) = 2/3`

`25/100 = (25:25)/(100:25) = 1/4`

`143/132 = (143:11)/(132:11) = 13/12`

`250/750 = (250:250)/(750:250) = 1/3`

Vậy `24/36 ; 25/100; 143/132; 250/750` rút gọn được bằng `2/3 ; 1/4 ; 13/12 ; 1/3`