213 /300 = 213 : 3 / 300 : 3 = 71/100
9/4 = 9 x 25 / 4 x 25 = 225/100
\(\frac{213}{300}=0,71\)
\(\frac{9}{4}=2,25\)
\(\frac{213}{300}=\frac{71}{100}\)
\(\frac{9}{4}=\frac{225}{100}\)
\(\frac{213}{300}\)=0,213
\(\frac{9}{4}\)=2,4
\(\frac{213}{300}\)=\(\frac{71}{100}\)
\(\frac{9}{4}\)=\(\frac{225}{100}\)
con này mới đúng