Question

so sánh ps

\(\frac{13}{25}\)và \(\frac{133}{153}\)

\(\frac{13}{15}\)và \(\frac{1333}{1555}\)

ai giải nhanh nhất mk k cho

Answer 1

\(\frac{13}{25}< \frac{133}{153}\)

\(\frac{13}{15}>\frac{1333}{1555}\)

mk nha nhất

Answer 2

\(\frac{13}{25}< \frac{133}{153}\)

\(\frac{13}{15}>\frac{1333}{1555}\)

Answer 3

a)Có \(\frac{13}{25}=\frac{65}{125};\frac{133}{153}=\frac{399}{459}\)
Có \(1-\frac{65}{125}=\frac{60}{125};1-\frac{399}{459}=\frac{60}{459}\)
Vì \(\frac{60}{125}>\frac{60}{459}\)=) \(1-\frac{65}{125}>1-\frac{399}{459}\)=) \(\frac{65}{125}< \frac{399}{459}\)
=) \(\frac{13}{25}< \frac{133}{153}\)
b) Có \(\frac{13}{15}=\frac{1443}{1665}\)
Có \(1-\frac{1443}{1665}=\frac{222}{1665};1-\frac{1333}{1555}=\frac{222}{1555}\)
Vì \(\frac{222}{1665}< \frac{222}{1555}\)=) \(1-\frac{1443}{1665}< 1-\frac{1333}{1555}\)=) \(\frac{1443}{1665}>\frac{1333}{1555}\)
=) \(\frac{13}{15}>\frac{1333}{1555}\)