5/36+5/9 11/4+15/16 1/7+25/49

2 câu trả lời

$\dfrac{5}{36}$ + $\dfrac{5}{9}$

= $\dfrac{5}{36}$ + $\dfrac{20}{36}$

=$\dfrac{25}{36}$

$\dfrac{11}{4}$ + $\dfrac{15}{16}$

= $\dfrac{44}{16}$ + $\dfrac{15}{16}$

= $\dfrac{59}{16}$

$\dfrac{1}{7}$ + $\dfrac{25}{49}$

= $\dfrac{7}{49}$ + $\dfrac{25}{49}$

= $\dfrac{32}{49}$

`5/36+5/9`

`=` `5/36+20/36`

`=` `25/36` 

`11/4+15/16`

`=` `44/16+15/16` 

`=` `59/16` 

`1/7+25/49`

`=` `7/49+25/49`

`=` `32/49`