\(\dfrac{7}{9}=\dfrac{28}{36};\dfrac{5}{12}=\dfrac{15}{36}\)

\(\dfrac{28}{36}\) ; \(\dfrac{15}{36}\)

\(\dfrac{7}{9}=\dfrac{28}{36};\dfrac{5}{12}=\dfrac{15}{36}\)

21/30 

15/9 = 5/3 = 50/30

12/8 = 3/2 = 45/30

tham khảo

21/30 

15/9 = 5/3 = 50/30

12/8 = 3/2 = 45/30

21/30 

15/9 = 5/3 = 50/30

12/8 = 3/2 = 45/30

tích cho mik thì mik trả lời

a, Phân số đó là \(\frac{7}{9}=\frac{28}{36}\) và \(\frac{5}{12}=\frac{15}{36}\)

b, Phân số đó là \(\frac{4}{7}=\frac{8}{14}\) và \(\hept{\begin{cases}3=\frac{21}{7}\\3=\frac{42}{14}\end{cases}}\)

a,  Phân số đó là 

$\frac{7}{9}=\frac{28}{36}$ và $\frac{5}{12}=\frac{15}{36}$

b, Phân số đó là $\frac{4}{7}=\frac{8}{14}$ và $\text{hept}\{\begin{array}{c}3=\frac{21}{7}\\ 3=\frac{42}{14}\end{array}$

\(\dfrac{162}{27};\dfrac{81}{27}\)

3/27,6/27.9/27

a: 5/3=10/6=25/15=35/21

b: 5/7=35/49

6/15=12/30

4/5=16/20

c: 6=216/36=324/54=108/18

a)\(\dfrac{5}{3}=\dfrac{10}{6}=\dfrac{25}{15}=\dfrac{35}{21}\)

b)\(\dfrac{5}{7}=\dfrac{35}{49};\dfrac{6}{15}=\dfrac{12}{30};\dfrac{4}{5}=\dfrac{16}{20}\)

c) \(6=\dfrac{216}{36}=\dfrac{324}{54}=\dfrac{108}{18}\)

Đúng

Skibo

Ta thấy :

\(6=\frac{6}{1}=\frac{6\times27}{1\times27}=\frac{162}{27}\)

\(\frac{3}{9}=\frac{3\times3}{9\times3}=\frac{9}{27}\)