a) \(3,7:4,5=\dfrac{3,7}{4,5}=\dfrac{37}{45}\)

b) \(2\dfrac{1}{3}:4\dfrac{2}{3}=\dfrac{7}{3}:\dfrac{14}{3}=\dfrac{7}{3}\times\dfrac{3}{14}=\dfrac{1}{2}\)

c) \(\dfrac{3}{8}:0,7=\dfrac{3}{8}:\dfrac{7}{10}=\dfrac{3}{8}\times\dfrac{10}{7}=\dfrac{15}{28}\)

d) \(5\dfrac{1}{7}:2\dfrac{1}{3}=\dfrac{36}{7}:\dfrac{7}{3}=\dfrac{36}{7}\times\dfrac{3}{7}=\dfrac{108}{49}\)

cảm ơn bạn

a) \(2.04:\left(-3.12\right)=\dfrac{204}{-312}=\dfrac{-17}{26}\)

b) \(\left(-1\dfrac{1}{2}\right):1.25=\dfrac{-3}{2}:\dfrac{5}{4}=\dfrac{-3}{2}\cdot\dfrac{4}{5}=\dfrac{-12}{10}=\dfrac{-6}{5}\)

c) \(4:5\dfrac{3}{4}=4:\dfrac{23}{4}=4\cdot\dfrac{4}{23}=\dfrac{16}{23}\)

d) \(10\dfrac{3}{7}:5\dfrac{3}{14}=\dfrac{73}{7}:\dfrac{73}{14}=\dfrac{2}{1}\)

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

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) \(\dfrac{0.7}{1.5}=\dfrac{7}{15}\)

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) \(2.7:0.42=\dfrac{45}{7}\)