Question

bài 51: So sánh các phân số:

b) 4/9, 6+9/6.9, 2/3

Answer 1

Ta có:\(\frac{4}{9}=\frac{4\cdot6}{9\cdot6}=\frac{24}{54}\)    ; \(\frac{6+9}{6\cdot9}=\frac{15}{54}\)  ;  \(\frac{2}{3}=\frac{2\cdot18}{3\cdot18}=\frac{36}{54}\)

=>\(\frac{15}{54}<\frac{24}{54}<\frac{36}{54}\)

=>\(\frac{6+9}{6\cdot9}<\frac{4}{9}<\frac{2}{3}\)

Answer 2

Ta có:\(\frac{4}{9}=\frac{4}{9}\)