Question

So sánh a = 5/3 và b = 8/7

Answer 1

\(\dfrac{5}{3}=\dfrac{35}{21}\)

\(\dfrac{8}{7}=\dfrac{24}{21}\)

do 35>24 nên \(\dfrac{5}{3}>\dfrac{8}{7}\)→a>b

Answer 2

\(ta.c\text{ó}:BCNN=21\\ \dfrac{5}{3}=\dfrac{5\cdot7}{3\cdot7}=\dfrac{35}{21};\dfrac{8}{7}=\dfrac{8\cdot3}{7\cdot3}=\dfrac{24}{21}\\ 35>24\\ \Rightarrow\dfrac{5}{3}>\dfrac{8}{7}hay.a>b\)

Answer 3

5/3>8/7

Có thể minh sai