Question

[nguyentriluyen]

Dien < > =

A 2/3:5/6.   4/5×2/3

B 1/2×3/4.  5/8:6/8

C 9/7:3/2.   7/6:1/4

D 13/12:12/11.   11/10:10/9

Cac ban nho ghi ket qua cuoi moi phan so nhe

Answer 1

[Huỳnh Quang Sang]

\(\frac{2}{3}:\frac{5}{6}=\frac{4}{5}\)

\(\frac{4}{5}\cdot\frac{2}{3}=\frac{8}{15}\)

Vậy : \(\frac{2}{3}:\frac{5}{6}< \frac{4}{5}x\cdot\frac{2}{3}\)nên \(\frac{4}{5}< \frac{8}{15}\)

Mình làm câu A

Answer 2

[Huỳnh Quang Sang]

\(\frac{1}{2}\cdot\frac{3}{4}=\frac{3}{8}\)\(;\frac{5}{8}:\frac{6}{8}=\frac{5}{6}\)

Vậy \(\frac{1}{2}\cdot\frac{3}{4}< \frac{5}{8}:\frac{6}{8}\)

Nên : \(\frac{3}{8}< \frac{5}{6}\)