Question

tính:

3/7x7/3

3/7:3/7

2/3x1/6x9/11

2x3x4 trên 2x3x4x5

 

 

 

Answer 1

3/7x7/3=1

3/7:7/3=1

2/3x1/6x9/11=2/3/54/11=36/11

2x3x4 trên 2x3x4x5=1/5

mk chắc chắn, cho mk nha, kb nhé

Answer 2

\(\frac{3}{7}x\frac{7}{3}=1\)

\(\frac{3}{7}:\frac{7}{3}=1\)

\(\frac{2}{3}x\frac{1}{6}x\frac{9}{11}=\frac{2x1x9}{3x6x11}=\frac{18}{198}=\frac{1}{11}\)

\(\frac{2x3x4}{2x3x4x5}=\frac{1}{5}\)