a) Ta có: \(\frac{143}{363}=\frac{143:11}{363:11}=\frac{13}{33}\) (đpcm)
b) Ta có: \(\frac{1212}{1717}=\frac{1212:101}{1717:101}=\frac{12}{17}\) (đpcm)
a)13/33 ; 143/363=143:11/363:11=13/33
=>13/33=143/363
b)12/27 ; 1212/2727=1212:101/2727:101=12/27
=>12/27=1212/2727
chúc bạn học tốt nha
a) Ta có :
\(\frac{13}{33}=\frac{13}{33}\)và \(\frac{143}{363}=\frac{143:11}{363:11}=\frac{13}{33}\)
Vậy \(\frac{13}{33}=\frac{143}{363}\)
b) Ta có :
\(\frac{12}{27}=\frac{12}{27}\)và \(\frac{1212}{2727}=\frac{1212:101}{2727:101}=\frac{12}{27}\)
Vậy \(\frac{12}{27}=\frac{1212}{2727}\)