\(\dfrac{87}{40}v\text{a}\dfrac{153}{200}\)
Mau chung la 200
=> \(\dfrac{87.5}{40.5}=\dfrac{435}{200}v\text{a}\dfrac{153}{200}\)
ma 435 > 153
=> \(\dfrac{435}{200}>\dfrac{153}{200}=>\dfrac{87}{40}>\dfrac{153}{200}\)
\(\dfrac{9}{8};\dfrac{5}{3}v\text{a}\dfrac{1}{2}\)
Mau chung la 24
=> \(\dfrac{9}{8}=\dfrac{9.3}{8.3};\dfrac{5}{3}=\dfrac{5.8}{3.8};\dfrac{1}{2}=\dfrac{1.12}{2.12}\\ \dfrac{27}{24};\dfrac{40}{24};\dfrac{12}{24}\)
ma 40>27>12
=> \(\dfrac{40}{24}>\dfrac{27}{24}>\dfrac{12}{24}\)
=>\(\dfrac{5}{3}>\dfrac{9}{8}>\dfrac{1}{2}\)
87/40 = \(\dfrac{87x5}{40x5}=\dfrac{435}{200}\)
153/200
9/8 = \(\dfrac{9x3}{8x3}=\dfrac{27}{24}\)
5/3 = \(\dfrac{5x8}{3x8}=\dfrac{40}{24}\)
1/2 = \(\dfrac{1x12}{2x12}=\dfrac{12}{24}\)
