\(\frac{7.25-49}{7.24-24}=\frac{175-49}{168-24}=\frac{126}{144}=\frac{7}{8}\)
Ta có: \(\frac{7\times25-49}{7\times24-24}\)
=\(\frac{7\times25-7\times2}{7\times24-24\times1}\)
= \(\frac{7\left(25-2\right)}{24\left(7-1\right)}\)
=\(\frac{7\times23}{24\times6}\)
= \(\frac{161}{96}\)
\(\frac{7.25-49}{7.24-24}=\frac{7.25-7.7}{7.24-24.1}=\frac{7\left(25-7\right)}{24\left(7-1\right)}=\frac{7.18}{24.6}=\frac{7}{8}\)
uk Thanh Tâm sai thiệt
49=7*2 (tính giỏi thiệt
