Question

so sánh các p/s sau:

\(\frac{17}{21}\)và\(\frac{17171}{21211}\)

Answer 1

Ta có: \(\frac{171717}{212121}=\frac{171717:10101}{212121:10101}=\frac{17}{21}\)

\(\Rightarrow\frac{17}{21}=\frac{171717}{212121}\)

Answer 2

Hình như bạn ghi thế này bạn ơi 

\(\frac{17}{21}\)và \(\frac{171717}{212121}\)

Ta có :

\(\frac{17}{21}\)và \(\frac{171717}{212121}\)=\(\frac{171717:10101}{212121:10101}\)=\(\frac{17}{21}\)

Vậy \(\frac{17}{21}\)=\(\frac{171717}{212121}\)

Answer 3

ta có:

\(\frac{171717}{212121}=\frac{171717:10101}{212121:10101}=\frac{17}{21}\)

vì \(\frac{17}{21}=\frac{17}{21}\Rightarrow\frac{17}{21}=\frac{171717}{212121}\)

Answer 4

\(Tacó\)

\(\frac{17}{21}\)                                                                  \(\left(1\right)\)

\(\frac{171717}{212121}=\frac{171717:10101}{212121:10101}=\frac{17}{21}\)         \(\left(2\right)\)

Từ ( 1 ) và ( 2 ) => \(\frac{17}{21}=\frac{171717}{212121}\)