Question

ai biết ko

2 - 3/4 = ?

3/9 +3 =?

Answer 1

`2-3/4= 8/4 -3/4=(8-3)/4= 5/4`

`3/9 + 3= 3/9 + 27/9= 30/9=10/3`

Answer 2

=\(\dfrac{5}{4}\)

=\(\dfrac{30}{9}\)=\(\dfrac{10}{3}\)

Answer 3

ta có 2- \(\dfrac{3}{4}\)=\(\dfrac{8}{4}\)-\(\dfrac{3}{4}\)=\(\dfrac{8-3}{4}\)=\(\dfrac{5}{4}\)

=\(\dfrac{10}{3}\)