Question

Tính nhanh :

\(\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+\frac{1}{6}+\frac{1}{7}\)

Answer 1

\(\frac{4}{12}+\frac{3}{12}+\frac{1}{5}+\frac{1}{6}+\frac{1}{7}=\frac{7}{12}+\frac{1}{5}+\frac{1}{6}+\frac{1}{7}\)

chúc bạn học tốt

Answer 2

\(\frac{4}{12}+\frac{3}{12}+\frac{1}{5}+\frac{1}{6}+\frac{1}{7}=\frac{7}{12}+\frac{1}{5}+\frac{1}{6}+\frac{1}{7}\)