Question

Tính: a] 2va 3/5 : 2va 1/4 + 5/2

         b] 16/6 - 2va 1/6 : 1va 1/7

         c] 4va 1/2 +  1/2 : 5va 1/2

 

Answer 1

a) \(2\frac{3}{5}:2\frac{1}{4}+\frac{5}{2}\)

\(=\frac{13}{5}:\frac{9}{4}+\frac{5}{2}\)

\(=\frac{52}{45}+\frac{5}{2}\)

\(=\frac{329}{90}\)

B) \(\frac{16}{6}-2\frac{1}{6}:1\frac{1}{7}\)

\(=\frac{8}{3}-\frac{13}{6}:\frac{8}{7}\)

\(=\frac{8}{3}-\frac{91}{48}\)

\(=\frac{37}{48}\)

c) \(4\frac{1}{2}+\frac{1}{2}:5\frac{1}{2}\)

\(=\frac{9}{2}+\frac{1}{2}:\frac{11}{2}\)

\(=\frac{9}{2}+\frac{1}{11}\)

\(=\frac{101}{22}\)