a) \(4\frac{3}{4}-1\frac{1}{2}\times1\frac{1}{3}=\frac{19}{4}-\frac{3}{2}\times\frac{4}{3}=\frac{19}{4}-2=\frac{11}{4}\)
b) \(3\frac{1}{2}-2\frac{2}{3}\div1\frac{5}{6}=\frac{7}{2}-\frac{8}{3}\div\frac{11}{6}=\frac{7}{2}-\frac{16}{11}=\frac{45}{22}\)
cảm ơn bạn nha !