Question

so sánh phân số 4/9 và 8/7

Answer 1

Có \(\frac{4}{9}< 1\)VÀ \(\frac{8}{7}>1\)

\(\Rightarrow\frac{4}{9}< \frac{8}{7}\)

Answer 2

đơn giản :

\(\frac{4}{9}< 1\)

\(\frac{8}{7}>1\)

\(\Rightarrow\frac{4}{9}< 1< \frac{8}{7}\)

Answer 3

\(\frac{4}{9}=\frac{28}{63}\)                   \(\frac{8}{7}=\frac{72}{63}\)

Vì \(\frac{28}{63}< \frac{72}{63}\)nên \(\frac{4}{9}< \frac{8}{7}\)

Answer 4

\(\frac{4}{9}=\frac{28}{63}\); \(\frac{8}{7}=\frac{72}{63}\)

\(\frac{28}{63}< \frac{72}{63}=>\frac{4}{9}< \frac{8}{7}\)

Answer 5

\(\frac{4}{9}=\frac{28}{63};\frac{8}{7}=\frac{72}{63}\)

Vì  \(\frac{28}{63}< \frac{72}{63}\)nên => \(\frac{4}{9}< \frac{8}{7}\)

Answer 6

Quy đồng mẫu số:

\(\frac{4}{9}=\frac{4.7}{9.7}=\frac{28}{63};\frac{8}{7}=\frac{8.9}{7.9}=\frac{72}{63}\)

Vì \(\frac{28}{63}< \frac{72}{63}\)

\(\Rightarrow\frac{4}{9}< \frac{8}{7}\)