Question

Tính

5/12+3/4+1/3,

1/4+3/7+11/14

Answer 1

\(\frac{5}{12}+\frac{3}{4}+\frac{1}{3}\)

\(=\frac{5}{12}+\frac{9}{12}+\frac{4}{12}\)

\(=\frac{5+9+4}{12}\)

\(=\frac{18}{12}=\frac{9}{4}\)

\(\frac{1}{4}+\frac{3}{7}+\frac{11}{14}\)

\(=\frac{7}{28}+\frac{12}{28}+\frac{22}{28}\)

\(=\frac{7+12+22}{28}\)

\(=\frac{41}{28}\)

Answer 2

\(\frac{5}{12}\)+\(\frac{3}{4}\)+\(\frac{1}{3}\)=\(\frac{5}{12}\)+\(\frac{9}{12}\)+\(\frac{4}{12}\)=\(\frac{18}{12}\)=\(\frac{3}{2}\)

\(\frac{1}{4}\)+\(\frac{3}{7}\)+\(\frac{11}{14}\)=\(\frac{7+12+22}{28}\)=\(\frac{41}{28}\)