tính 

a) \(3\frac{4}{5}-2\frac{3}{4}:1\frac{1}{8}=????\)

b) \(4\frac{5}{7}:1\frac{5}{6}+2\frac{7}{15}x\frac{21}{74}=???????\)

tính 

a) \(3\frac{4}{5}-2\frac{3}{4}:1\frac{1}{8}=????\)

b) \(4\frac{5}{7}:1\frac{5}{6}+2\frac{7}{15}x\frac{21}{74}=???????\)

tính 

a) \(3\frac{4}{5}-2\frac{3}{4}:1\frac{1}{8}=????\)

b) \(4\frac{5}{7}:1\frac{5}{6}+2\frac{7}{15}x\frac{21}{74}=???????\)

So sánh \(A\)với\(13\),biết rằng:

\(A=\frac{13}{15}+\frac{7}{5}+\frac{3}{4}+\frac{1}{5}+\frac{1}{7}+\frac{19}{20}+\frac{5}{4}+\frac{1}{3}+\frac{1}{6}+\frac{1}{13}+\frac{17}{23}+\frac{9}{8}+\frac{2}{5}+\frac{1}{7}+\frac{1}{25}+\frac{3}{2}+\frac{1}{8}+\frac{1}{19}+\frac{1}{9}+\frac{1}{97}\)

\(\frac{10+\frac{9}{2}+\frac{8}{3}+\frac{7}{4}+ \frac{6}{5}+\frac{5}{6}+\frac{4}{7}+\frac{3}{8}+\frac{2}{9}+\frac{1}{10}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{10}+\frac{1}{11}}\)

tính bằng cách thuận tiện 

a. \(\frac{1}{2}\times\frac{2}{3}\div\frac{4}{3}\times\frac{4}{5}\div\frac{6}{5}\times\frac{6}{7}\div\frac{7}{8}\times\frac{8}{9}\div\frac{10}{9}\)

b.\(\frac{27}{49}\times\frac{49}{50}\times\frac{15}{51}\times(\frac{5}{10}-\frac{1}{2})\)

tính bằng cách thuạn tiện nhất

a) \(5\frac{3}{4}:3+2\frac{1}{4}x\frac{1}{3}-\frac{3}{4}=?\)

b) \(\frac{3}{5}:\frac{5}{6}:\frac{6}{7}:\frac{7}{8}+\frac{7}{8}+\frac{2}{5}+\frac{23}{35}=??\)

ai đúng trả lời nhanh k ạ

tính bằng cách thuạn tiện nhất

a) \(5\frac{3}{4}:3+2\frac{1}{4}x\frac{1}{3}-\frac{3}{4}=?\)

b) \(\frac{3}{5}:\frac{5}{6}:\frac{6}{7}:\frac{7}{8}+\frac{7}{8}+\frac{2}{5}+\frac{23}{35}=??\)

ai đúng trả lời nhanh k ạ