Quy đồng mẫu

quy dong mau

< chắc chắn

ta có 58/89 =3074/4717 ; 36/53 = 3204/4717

Vì 3074/4717 <3204/4717 .Nên 58/89<36/53

k đi

> chắc chắn

11/32=0,34375;16/49=0.3265306122

vay 11/32 > 16/49

58/89=0,6516853933;36/53=0,679246283

vay 58/89 < 36/53

11/32<16/49

58/89>36/53

\(\frac{58}{89}< \frac{36}{53}\)

kb nha!

\(\frac{58}{89}\)=0.651685393

\(\frac{36}{53}\)=0.679245283

vì 0.679245283 > 0.651685393

nên\(\frac{58}{89}\)<\(\frac{36}{53}\)

Ta có :

\(\frac{58}{89}=\frac{58.53}{89.53}=\frac{3074}{4717}\)

\(\frac{36}{53}=\frac{36.89}{53.89}=\frac{3204}{4717}\)

Ta thấy : 3074/4717 < 3204/4747 => 58/89 < 36/53

Vì 58*53<89*36(3074<3204)

=>58/89<36/53

Ta có 58 x 53 = 3074

mà 36 x 89 = 3204 

Vì 3074 < 3204 

=) 58/89 < 36/53

\(\frac{58}{89}\)&   \(\frac{36}{53}\)

Ta có : 

  \(\frac{58}{89}\)=  \(\frac{58.53}{89.53}\)=\(\frac{3074}{4717}\)         ;              \(\frac{36}{53}\)=\(\frac{36.89}{53.89}\)=\(\frac{3204}{4717}\)

Vậy \(\frac{58}{89}\)<  \(\frac{36}{53}\)

\(\frac{58}{63}\)&   \(\frac{36}{55}\)

Ta có:

  \(\frac{58}{63}\)=\(\frac{58.55}{63.55}\)=\(\frac{3190}{3465}\)                  ;                   \(\frac{36}{55}\)=\(\frac{36.63}{55.63}\)=\(\frac{2268}{3465}\)

Vậy \(\frac{58}{63}\)>    \(\frac{36}{55}\)

58/89<36/89

58/63>36/55

\(\frac{12}{47}>\frac{12}{48}=\frac{1}{4}\)

\(\frac{19}{77}< \frac{19}{76}=\frac{1}{4}\)

\(\Rightarrow\frac{12}{47}>\frac{19}{77}\)

\(\frac{58}{89}< \frac{58}{87}=\frac{2}{3}\)

\(\frac{36}{53}>\frac{36}{54}=\frac{2}{3}\)

\(\Rightarrow\frac{58}{89}< \frac{36}{53}\)