Các câu hỏi tương tự
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, \(\left(\frac{2}{11.13}+\frac{2}{13.15}+...+\frac{2}{19.21}\right)-x+4+\frac{221}{231}=\frac{7}{3}\)
tìm x biết:
b)\(\frac{2}{11.13}+\frac{2}{13.15}+...+\frac{2}{19.21}-x+\frac{23}{231}=\frac{5}{77}\)
Tìm x biết \(\frac{2}{11.13}+\frac{2}{13.15}+....+\frac{2}{19.21}.x+\frac{23}{231}=\frac{5}{77}\)
a)Tìm số tự nhiên a nhỏ nhất sao cho a chia cho 3, cho 5, cho 7 được số dư thứ tự là 2, 4, 6
b) \(\frac{1}{3}+\frac{3}{35}< \frac{x}{210}< \frac{4}{7}+\frac{3}{5}+\frac{1}{3}\)
c)\(\left(\frac{2}{11.13}+\frac{2}{13.15}+...+\frac{2}{19.21}\right)-x+\frac{221}{231}=\frac{4}{3}\)
\(\left(\frac{2}{11.13}+\frac{2}{13.15}+.........\frac{2}{19.20}\right)-x+\frac{221}{231}=\frac{4}{3}\)
\(\left(\frac{2}{11.13}+\frac{2}{13.15}+...+\frac{2}{19.21}\right).231-\left(3^{16}:3^{14}-2^8:2^6\right).x=2013^0\)
\(\left(\frac{2}{11.13}+\frac{2}{13.15}+..............\frac{2}{19.21}\right).462-\frac{17}{x+1.05}=19\)
Tìm x
Tìm x biết (2/11.13+2/13.15+...+2/19.21)-x+ 4+221/231=7/3
( 2/11.13 + 2/13.15 + ..... + 2/19.21 ) -x + 221/231 =4/3