a) 7/3
b)22/5
c)13/4
d)68/7
103/10
tk tôi nha
4 2/5 = 22/5 ; 3 1/4 = 13/4 ;9 5/7 = 68/7 ; 10 3 /10 = 103/10
K NHa
Hãy dựa vào tính chất sau: a b/c= a*c+b /c
VD: 2 1/3= 2*3+1 /3=7/3
\(2\frac{1}{3}=\frac{2.3+1}{3}=\frac{7}{3}\)
\(4\frac{2}{5}=\frac{4.5+2}{5}=\frac{22}{5}\)
\(3\frac{1}{4}=\frac{3.4+1}{4}\frac{13}{4}\)
\(9\frac{5}{7}=\frac{9.7+5}{7}\frac{68}{7}\)
\(10\frac{3}{10}=\frac{10.10+3}{3}=\frac{103}{3}\)