a: \(1.5:2.16=\dfrac{25}{36}\)

b: \(\dfrac{3}{8}:0.54=\dfrac{25}{36}\)

c: \(-0.375:3.63=-\dfrac{25}{242}\)

a.1,5:2,16=25:36

b.2/9 :0,31=200:279

a) \(1,5:2,16=\frac{1,5}{2,16}=\frac{25}{36}\)

b) \(\frac{30}{7}:\frac{3}{5}=\frac{30}{7}.\frac{5}{3}=\frac{50}{7}\)

c) \(\frac{2}{9}:0,31=\frac{2}{9}.\frac{1}{0,31}=\frac{200}{279}\)

\(1,5:2,16=150:216\)

\(4\frac{2}{7}:\frac{3}{5}=\frac{30}{7}:\frac{3}{5}=50:7\)

\(\frac{2}{9}:0,31=\frac{2}{9}\times900:0,31\times900=200:279\)

a)\(1,5:2,16=15:216=5:72\)

b)\(4\dfrac{2}{7}:\dfrac{3}{5}=\dfrac{30}{7}:\dfrac{3}{5}=\dfrac{30}{7}.\dfrac{5}{3}=\dfrac{50}{7}=50:7\)

c)\(\dfrac{\dfrac{2}{9}}{0,31}=\dfrac{2}{9}:\dfrac{31}{100}=\dfrac{2}{9}.\dfrac{100}{31}=\dfrac{31}{450}=31:450\)

a) 1,5 : 2,16 

\(=\frac{15}{10}:\frac{216}{100}=\frac{3}{2}:\frac{54}{25}=\frac{3}{2}.\frac{25}{54}=\frac{25}{36}=25:36\)

Các câu còn lại lm tương tự

a) − 6 25 ;                    b) 2 11                               c)  5 6

\(\frac{1.5}{2.16}=\frac{1.5\times100}{2.16\times100}=\frac{150}{216}=\frac{150:6}{216:6}=\frac{25}{36}\)

\(\frac{25}{36}\)

1,5 : 2,16 = 3/2 : 54/25 = 25/36