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
1,2: 3,24= 1,2/3,24=1,2.100/3,24.100=120/324=25/81
2/7:0,42=2/7:42/100=2/7:21/50=2/7.50/21= 2.21/7.50 =1.3/1.25=3/25
\(1,2\div3,24=\frac{10}{27}\)
\(\frac{2}{7}\div0,42=\frac{100}{147}\)