Question

tính

a. 2/9:2/3:1/2

b. 2/5x1/2:1/3

Answer 1

2/9 : 2/3 : 1/2

= 2/9 x 3/2 x 2 

= 3 x 2

= 6 

2/5 x 1/2 : 1/3

= 2/10 : 1/3

= 2/10 x 3

= 6/10 

=  3/5

Answer 2

a,Kết quả là 6

b,Kết quả là 3/5

Answer 3

a) \(\frac{2}{9}:\frac{2}{3}:\frac{1}{2}=\frac{2}{9}.\frac{3}{2}:\frac{1}{2}=\frac{3}{9}:\frac{1}{2}=\frac{1}{3}.2=\frac{2}{3}\)

b) \(\frac{2}{5}.\frac{1}{2}:\frac{1}{3}=\frac{1}{5}.3=\frac{3}{5}\)