Question

1.So sánh

a, 3/7 và 11/15

b,­11/6 và ­8/9

c,296/16 và 306/25

làm rõ ra nha

Answer 1

b)Vì:

\(\frac{11}{6}>1\)Và \(\frac{8}{9}< 1\)

\(\Rightarrow\frac{11}{6}>\frac{8}{9}\)

tíc mình nha

Answer 2

a) 3/7 < 11/15

b) 11/6 > 8/9

c) 296/16 >  306/25

Answer 3

a) \(\frac{3}{7}\)và \(\frac{11}{15}\)

Ta có:

\(\frac{3}{7}=\frac{3x15}{7x15}=\frac{45}{105}\); \(\frac{11}{15}=\frac{11x7}{15x7}=\frac{77}{105}\)

Vì \(\frac{45}{105}< \frac{77}{105}\)

=> \(\frac{3}{7}< \frac{11}{15}\)

b) \(\frac{11}{6}\)và \(\frac{8}{9}\)

Ta có:  \(\frac{11}{6}=\frac{11x9}{6x9}=\frac{99}{54}\); \(\frac{8}{9}=\frac{8x6}{9x6}=\frac{40}{54}\)

Vì \(\frac{99}{54}>\frac{40}{54}\)

=> \(\frac{11}{6}>\frac{8}{9}\)

c)\(\frac{296}{16}\)và \(\frac{306}{25}\)

 \(\frac{296}{16}=\frac{37}{2}\)=> \(\frac{37}{2}=\frac{37x25}{2x25}=\frac{925}{50}\); \(\frac{306}{25}=\frac{306x2}{25x2}=\frac{612}{50}\)

Vì \(\frac{925}{50}>\frac{612}{50}\)

nên \(\frac{296}{16}>\frac{306}{25}\)