Question

bài 3 tính 

5/6 + 7/4 + 11/24

5/7 - 2/5 - 3/35

4/9 * 3/2 * 9/5

21/22 : 7/11 * 2/3

lưu ý :* ( nhân) 

Answer 1

\(\frac{5}{6}+\frac{7}{4}+\frac{11}{24}=\frac{20+42+11}{24}=\frac{73}{24}\)

\(\frac{5}{7}-\frac{2}{5}-\frac{3}{35}=\frac{25-14-3}{35}=\frac{8}{35}\)

\(\frac{4}{9}\times\frac{3}{2}\times\frac{9}{5}=\frac{4\times3\times9}{9\times2\times5}=\frac{6}{5}\)

\(\frac{21}{22}:\frac{7}{11}\times\frac{2}{3}=\frac{21}{22}\times\frac{11}{7}\times\frac{2}{3}=\frac{3}{2}\times\frac{2}{3}=1\)