Question

Bài 17

a)\(\dfrac{3}{7}\). \(\dfrac{14}{5}\)

b) \(\dfrac{35}{9}\). \(\dfrac{81}{7}\)

c) \(\dfrac{28}{17}\) . \(\dfrac{68}{14}\)

d) \(\dfrac{35}{46}\) . \(\dfrac{23}{105}\)

e) \(\dfrac{12}{5}\): \(\dfrac{16}{15}\)

i) \(\dfrac{9}{8}\) : \(\dfrac{6}{5}\)

Answer 1

a,\(\dfrac{3}{7}\).\(\dfrac{14}{5}\)=\(\dfrac{6}{5}\)

b,\(\dfrac{35}{9}\).\(\dfrac{81}{7}\)=45

c,\(\dfrac{28}{17}\).\(\dfrac{68}{14}\)=8

d,\(\dfrac{35}{46}\).\(\dfrac{23}{105}\)=\(\dfrac{1}{6}\)

e,\(\dfrac{12}{5}\):\(\dfrac{16}{15}\)=\(\dfrac{12}{5}\).\(\dfrac{15}{16}\)=\(\dfrac{9}{4}\)

i,\(\dfrac{9}{8}\):\(\dfrac{6}{5}\)=\(\dfrac{9}{8}\).\(\dfrac{5}{6}\)=\(\dfrac{15}{16}\)