Question

Quy đồng rồi chừ:

2/1 - 15/24 =..........

giúp mik với

 

Answer 1

48/24-15/24=33/24

Answer 2

2/1 - 15/24 = 48/24 - 15/24 = 11/8

Answer 3

=2/1-5/8

=16/8-5/8

=11/8

Answer 4

MSC : 24

\(\dfrac{2}{1}\) = 2 × \(\dfrac{2x24}{1x24}\) = \(\dfrac{48}{24}\)

\(\Rightarrow\) \(\dfrac{2}{1}\) - \(\dfrac{15}{24}\) = \(\dfrac{48}{24}\) - \(\dfrac{15}{24}\) = \(\dfrac{48-15}{-24}\) = \(\dfrac{33}{24}\)

Vậy \(\dfrac{2}{1}\) - \(\dfrac{15}{24}\) = \(\dfrac{33}{24}\)