Các câu hỏi tương tự
Tính:
\(\left(\frac{11}{12}+\frac{11}{12.23}+\frac{11}{23.34}+...+\frac{11}{89.100}\right)\)
Tìm x biết:
\(\left(\frac{11}{12}+\frac{11}{12.23}+...+\frac{11}{89.100}\right)+x=\frac{2}{3}\)
Hình như câu này sai đề
tìm x, biết
a, \(\left(\frac{11}{12}+\frac{11}{12.23}+\frac{11}{23.24}+...+\frac{11}{89.100}\right)+x=\frac{5}{3}\)
b, \(\left(\frac{2}{11.13}+\frac{2}{13.15}+...+\frac{2}{19.21}\right)-x+4+\frac{221}{231}=\frac{7}{3}\)
21 tháng 11 2016 lúc 10:13
\(\frac{11}{12}+\frac{11}{12.23}+\frac{11}{23.24}+...+\frac{11}{89.100}\)=?
(\(\frac{11}{12}+\frac{11}{12.23}+\frac{11}{23.24}+...+\frac{11}{89.100}\))+x = \(\frac{2}{3}\)
Tính:
\(\frac{11}{12}+\frac{11}{12.23}+\frac{11}{23.34}+...+\frac{11}{89.100}\)
(\(\frac{11}{12}\)+\(\frac{11}{12.23}\)+\(\frac{11}{23.34}\)+....+\(\frac{11}{89.100}\)) + x = \(\frac{5}{3}\)
Tìm X <- N
a) ( \(\frac{11}{12}\)+ \(\frac{11}{12.23}\)+ \(\frac{11}{23.34}\)+ ........ + \(\frac{11}{89.100}\)) . x = \(\frac{1}{100}\)
Bài 2 : Tìm x, biết :
\(a.\frac{11}{13}-\left(\frac{5}{42}-x\right)=-\left(\frac{15}{28}-\frac{11}{13}\right)\)
\(b.\left(\frac{7}{12}+x\right)-\frac{11}{12}=\frac{2}{3}\)