\(=\dfrac{3}{5}\\ =\dfrac{7}{9}\\ =\dfrac{4}{3}\\ =\dfrac{9}{7}\)

\(\dfrac{6}{10}=\dfrac{3}{5};\dfrac{70}{90}=\dfrac{7}{9};\dfrac{96}{72}=\dfrac{8}{9};\dfrac{45}{35}=\dfrac{9}{7}\)

\(\dfrac{6}{10}=\dfrac{3}{5};\dfrac{70}{90}=\dfrac{7}{9};\)\(\dfrac{96}{72}=\dfrac{4}{3}\)\(\dfrac{45}{35}=\dfrac{9}{7}\)

\(\dfrac{6}{10}=\dfrac{3}{5};\dfrac{70}{90}=\dfrac{7}{9};\dfrac{96}{72}=\dfrac{4}{3};\dfrac{45}{35}=\dfrac{9}{7}\)

`6/10=(6:2)/(10:2)=3/5`

`70/90=(70:10)/(90:10)=7/9`

`96/72=(96:24)/(72:24)=4/3`

`45/35=(45:5)/(35:5)=9/7`

\(\dfrac{6}{10}=\dfrac{6:2}{10:2}=\dfrac{3}{5}\)

\(\dfrac{70}{90}=\dfrac{70:10}{90:10}=\dfrac{7}{9}\)

\(\dfrac{96}{72}=\dfrac{96:24}{72:24}=\dfrac{4}{3}\)

\(\dfrac{45}{35}=\dfrac{45:5}{35:5}=\dfrac{9}{7}\)

`6/10=3/5`

`70/9=70/9`

`96/72=4/3`

`45/35=9/7`

`24/36=2/3`

`25/100=1/4`

$6/10=(6:2)/(10:2)=3/5$

$70/9$ ( tối giản)

$96/72=(96:24)/972:24)=4/3$

$45/35=(45:5)/(35:5)=9/7$

$24/36=(24:12)/(36:12)=2/3$

$25/100=(25:25)/(100:25)=1/4$

a 3/5

b 2/3

c 4/3

d 7/5

a) = 3/5 

b)2/3

c) 4/3

d) 7/5

a,3/5   b,7/9    c,3/7    d,1/5     2/3         4/3         9/7             11/3                     tick cho tui

6/10=3/5

70/90=7/9

9/21=3/7

24/120=1/5

24/36=2/3

96/72=4/3

45/35=9/7

121/33=11/3

\(\dfrac{70}{90}=\dfrac{70:10}{90:10}=\dfrac{7}{9}\)

= 9/7

a: 90/126=5/7<6/7

b: 70/84=5/6

35/42=5/6

=>70/84=35/42

a)\(\dfrac{90}{126}=\dfrac{5}{7}< \dfrac{6}{7}\Leftrightarrow\cdot\dfrac{90}{126}< \dfrac{6}{7}\)

b)\(\dfrac{70}{84}=\dfrac{5}{6};\dfrac{35}{42}=\dfrac{5}{6}\Leftrightarrow\cdot\dfrac{70}{84}=\dfrac{35}{42}\)

a)25/50 + 5/15 = 1/2 + 1/3 = 5/6

b)72/90 + 7/28 = 4/5 + 1/4 =\(1\frac{1}{20}\)

c)32/96 + 8/28 = 1/3 + 2/7 = 13/21

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