Bài 1: Thực hiện phép tính 1 cách hợp lý;a) Cho B frac{left(5-frac{5}{13}+frac{5}{19}-frac{5}{27}right).4024.4026}{left(10-frac{10}{13}+frac{10}{19}-frac{10}{27}right).2012.2013} b) ChoAfrac{11}{210}-left(frac{16}{15.31}+frac{13}{31.44}+frac{13}{22.70}right) c) frac{3}{200}-frac{3}{110}-frac{3}{90}-frac{3}{72}-frac{3}{56}-...-frac{3}{2} d) ChoCfrac{frac{1}{29}+frac{1}{11}-frac{1}{2013}}{frac{1}{29}+frac{1}{11}-frac{1}{2013}+frac{1}{11}.frac{1}{29}.frac{1}{20...
Đọc tiếp
Bài 1: Thực hiện phép tính 1 cách hợp lý;
\(a\)) \(Cho\) B\(=\) \(\frac{\left(5-\frac{5}{13}+\frac{5}{19}-\frac{5}{27}\right).4024.4026}{\left(10-\frac{10}{13}+\frac{10}{19}-\frac{10}{27}\right).2012.2013}\)
\(b\)) \(Cho\)\(A\)\(=\)\(\frac{11}{210}-\left(\frac{16}{15.31}+\frac{13}{31.44}+\frac{13}{22.70}\right)\)
\(c\)) \(\frac{3}{200}-\frac{3}{110}-\frac{3}{90}-\frac{3}{72}-\frac{3}{56}-...-\frac{3}{2}\)
\(d\)) \(Cho\)\(C=\)\(\frac{\frac{1}{29}+\frac{1}{11}-\frac{1}{2013}}{\frac{1}{29}+\frac{1}{11}-\frac{1}{2013}+\frac{1}{11}.\frac{1}{29}.\frac{1}{2013}}+\frac{1}{11.2013+29.2013-318}\)
