Question

Đã trả lời bởi chuyên gia

Answer 1

* Ta có: $\frac{12}{13} = \frac{12 \times 14}{13 \times 14}; \frac{11}{14} = \frac{11 \times 13}{14 \times 13}$

Mà $12 \times 14 > 11 \times 13$

=> $\frac{12 \times 14}{13 \times 14} > \frac{11 \times 13}{14 \times 13}$

=> $\frac{12}{13} > \frac{11}{14}$

*Ta có: $\frac{45}{46} = \frac{45 \times 47}{46 \times 47}; \frac{44}{47} = \frac{44 \times 46}{47 \times 46}$

Mà $45 \times 47 > 44 \times 46$

=> $\frac{45 \times 47}{46 \times 47} > \frac{44 \times 46}{47 \times 46}$

=> $\frac{45}{46} > \frac{44}{47}$

* $\frac{3737}{5353} = \frac{37 \times 101}{53 \times 101} = \frac{37}{53} \frac{373737}{535353} = \frac{37 \times 10101}{53 \times 10101} = \frac{37}{53}$

* Ta có: $\frac{23}{28} = 1 - \frac{5}{28}; \frac{24}{29} = 1 - \frac{5}{29}$

Mà: $12 \times 14 > 11 \times 13$ 0

=> $12 \times 14 > 11 \times 13$ 1

=> $12 \times 14 > 11 \times 13$ 2

...Xem thêm

Answer 2