Question

Rút gọn 

a) \(\frac{2.4}{6.18}\)b) \(\frac{3.5.7}{6.9.14}\)c)\(\frac{4.7-4.5}{64}\)

Answer 1

\(\frac{2.4}{6.18}=\frac{1.2}{3.9}=\frac{2}{27}\)

\(\frac{3.5.7}{6.9.14}=\frac{1.5.7}{2.9.2}=\frac{35}{36}\)

\(\frac{4.7-4.5}{64}=\frac{4\left(7-5\right)}{64}=\frac{8}{64}=\frac{1}{8}\)

Answer 2

a, \(\frac{2.4}{6.18}\)

\(=\frac{2.2.2}{2.3.2.9}=\frac{2}{27}\)

P/s: Trl từng câu :)

Answer 3

b, \(\frac{3.5.7}{6.9.14}\)

\(=\frac{3.5.7}{2.3.9.7.2}\)

\(=\frac{5}{2.9.2}=\frac{5}{36}\)

Answer 4

c, \(\frac{4.7-4.5}{64}\)

\(=\frac{4.\left(7-5\right)}{4.16}\)

\(=\frac{4.2}{4.2.8}=\frac{1}{8}\)

Answer 5

Phần b quên rút gọn 7 là còn 5/36 nhé