Question

Tính giá trị biểu thức:

a,\(\frac{1}{2}\times\frac{4}{5}\div\frac{6}{10}\)

b,\(\frac{24}{35}\div\left(\frac{4}{5}\times\frac{8}{7}\right)\)

Answer 1

a)\(\frac{2}{3}\)

b)\(\frac{3}{4}\)

Answer 2

\(a,\frac{1}{2}\times\frac{4}{5}\div\frac{6}{10}\)

\(=\frac{2}{5}\div\frac{6}{10}\)

\(=\frac{2}{5}\times\frac{10}{6}\)

\(=\frac{2}{3}\)

\(b,\frac{24}{35}\div\left(\frac{4}{5}\times\frac{8}{7}\right)\)

\(=\frac{24}{35}\div\frac{32}{35}\)

\(=\frac{24}{35}\times\frac{35}{32}\)

\(=\frac{3}{4}\)

Answer 3

a=2/3 [ đã rút gọn]

b=21/28  [ đã rút gọn]

Answer 4

a)1/2*4/5:6/10

=4/10:6/10

=40/60=2/3

Answer 5

\(a,\frac{1}{2}.\frac{4}{5}\div\frac{6}{10}\)

\(=\frac{2}{5}\div\frac{6}{10}\)

\(=\frac{2}{5}.\frac{10}{6}\)

\(=\frac{2}{3}\)

\(b,\frac{24}{35}\div\left(\frac{4}{5}.\frac{8}{7}\right)\)

\(=\frac{24}{35}\div\frac{32}{35}\)

\(=\frac{24}{35}.\frac{35}{32}\)

\(=\frac{3}{4}\)