rut gon cac phan so 45 phan 135 , 117 phan 234, 1515 phan 2727, 232323 phan 494949

Đáp án+Giải thích các bước giải:

$\dfrac{45}{135}$ = $\dfrac{45 : 45}{135 : 45}$ = $\dfrac{1}{3}$

$\dfrac{117}{234}$ = $\dfrac{117 : 117}{234 : 117}$ = $\dfrac{1}{2}$

$\dfrac{1515}{2727}$ = $\dfrac{1515 : 303}{2727 : 303}$ = $\dfrac{5}{9}$

$\dfrac{232323}{494949}$ = $\dfrac{232323 : 10101}{494949 : 10101}$ = $\dfrac{23}{49}$

CHÚC BẠN HỌC TỐT!!

`45/135=(45:45)/(135:45)=1/3`

`117/234=(117:117)/(234:117)=1/2`

`1515/2727=(1515:303)/(2727:303)=5/9`

`232323/494949=(232323:10101)/(494949:10101)=23/49`