Question

b/ \(\frac{5.7.13}{26+5.13}\)

Answer 1

\(\frac{5.7.13}{26+5.13}=\frac{5.7.13}{2.13+5.13}=\frac{5.7.13}{13\left(2+5\right)}=\frac{5.7}{2+5}\)

Answer 2

\(\frac{5.7.13}{26+5.13}=\frac{5.7.13}{13.\left(2+5\right)}=\frac{5.7}{2+5}=\frac{5.7}{10}=\frac{5.7}{2.5}=\frac{7}{2}\)

Answer 3

d

Answer 4

âm 4,5 phần âm 2,5