a)  \(1,2\div3,24=10\div27\)

b)  \(\frac{2}{7}\div0,42=100\div147\)

p/s: chúc bạn học tốt

Ta có :

\(1.2:3.24=\frac{1.2}{3.24}=\frac{10}{27}\)

\(\frac{2}{7}:0.42=\frac{2}{7}:\frac{21}{50}=\frac{2}{7}\cdot\frac{50}{21}=\frac{100}{147}\)

a) 1,2 : 3,24 = \(\frac{6}{5}:\frac{81}{25}\)= \(\frac{6}{5}.\frac{25}{81}=\frac{10}{27}\)= 10 : 27

b) \(\frac{2}{7}:0,42=\frac{2}{7}:\frac{21}{50}\)\(=\frac{2}{7}.\frac{50}{21}=\frac{100}{147}\)= 100 : 147

a) \(\dfrac{0.7}{1.5}=\dfrac{7}{15}\)

b) \(\dfrac{11}{5}:\dfrac{3}{4}=\dfrac{2.2}{0.75}=\dfrac{44}{15}\)

c) \(3:0.02=3\cdot50=\dfrac{150}{1}\)

d) \(2.7:0.42=\dfrac{45}{7}\)

a. 1,2 : 3,24 = \(\frac{1,2}{3,24}\)= \(\frac{120}{324}\)=\(\frac{120:12}{324:12}\)=\(\frac{10}{27}\)

b. 215 : 34215 : 34 = \(\frac{215}{34215}\). \(\frac{1}{34}\)=\(\frac{43}{6843}\).\(\frac{1}{34}\)=\(\frac{43}{232662}\)

c. 27 : 0,42 = 27 : \(\frac{42}{100}\)= 27 : \(\frac{21}{50}\)= 27 . \(\frac{50}{21}\)= \(\frac{27.50}{21}\)=\(\frac{9.50}{7}\)=\(\frac{450}{7}\)

a đúng bc sai

I'm sorry Phung Minh Quan

A)1,2 : 3,24                    b) \(2\frac{1}{5}\) : \(\frac{3}{4}\)                                    c)\(\frac{2}{7}\) : 0,42

     \(\frac{12}{10}\) : \(\frac{324}{100}\)                          \(\frac{11}{5}\) : \(\frac{3}{4}\)                                    \(\frac{2}{7}\) : \(\frac{42}{100}\)

a) 10/27

b) 44/15

c) 100/147

tick đúng nha :)

a) 1,2: 3,24 = 120 : 324 = 10:27

b) =

c) =

a) \(\frac{10}{27}\)

b)\(\frac{44}{15}\)

c)\(\frac{100}{147}\)

tích đúng cho mình nhé bạn

a)\(\frac{10}{27}\)

b) \(\frac{44}{15}\)

c) \(\frac{100}{147}\)