2/1=6/3

1/2=3/6

3/1=6/2

1/3=2/6

kho qua kho qua ?..........................................

như nguyễn đức dương trả lời

Từ đẳng thức: 2 . 3 = 1 . 6 ta viết được các cặp phân số bằng nhau là:

\(\dfrac{2}{1}=\dfrac{6}{3};\dfrac{1}{2}=\dfrac{3}{6};\dfrac{1}{3}=\dfrac{2}{6};\dfrac{3}{1}=\dfrac{6}{2}\)

\(\dfrac{2}{1}=\dfrac{6}{3}\)

\(\dfrac{1}{2}=\dfrac{3}{6}\)

\(\dfrac{3}{1}=\dfrac{6}{2}\)

\(\dfrac{1}{3}=\dfrac{2}{6}\)

1 ) \(\frac{3}{9}=\frac{9}{27}=\frac{27}{81}=\frac{81}{243}\)

2) \(\frac{9}{3}=\frac{27}{9}=\frac{81}{27}=\frac{243}{81}\)

3) \(\frac{3}{27}=\frac{9}{81}=\frac{27}{243}\)

4) \(\frac{27}{3}=\frac{81}{9}=\frac{243}{27}\)

tk mình nha bạn

\(\frac{2}{4}=\frac{8}{16},\frac{4}{16}=\frac{8}{32}\)

2/4=4/8

Tu nam so 2;4;6;18;32 ta co dang thuc:

     2.16=4.8   (1)

     2.32=4.16  (2)

      4.32=8.16  (3)

Tu (1) ta lap duoc:2/4=8/16; 2/8=4/16;16/8=4/2;16/4=8/2

tu (2)...................:2/4=16/32;2/16=4/32;32/16=4/2;32/4=16/2

tu (3)....................:4/8=16/32'4/16=8/32;32/8=16/4;32/16=8/4

2/2 3/3 -6/-6 -9/-9