Các câu hỏi tương tự
Tìm x biết
\(\left(\frac{1}{2}+\frac{1}{3}+....+\frac{1}{2014}+\frac{1}{2015}\right).x=\frac{2014}{1}+\frac{2013}{2}+\frac{2012}{3}+...+\frac{2}{2013}+\frac{1}{2014}\)
tìm x biết :(\(\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2014}.x=\frac{2013}{1}+\frac{2012}{2}+....+\frac{2}{2012}+\frac{1}{2013}\)
Tìm x, biết:
\(\left(1+\frac{1}{2}+\frac{1}{3}+....+\frac{1}{2013}\right).x+2013=\frac{2014}{1}+\frac{2015}{2}+...+\frac{4025}{2012}+\frac{4026}{2013}\)
Tìm x, biết:
\(\left(1+\frac{1}{2}+\frac{1}{3}+....+\frac{1}{2013}\right).x+2013=\frac{2014}{1}+\frac{2015}{2}+...+\frac{4025}{2012}+\frac{4026}{2013}\)
Tính giá trị biểu thức sau :
\(\frac{20}{30}+\frac{20}{70}+\frac{20}{126}+...+\frac{20}{798}\)
(\(1+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2013}\) ) \(.x+2013=\frac{2014}{1}+\frac{2015}{2}+...+\frac{4025}{2012}+\frac{4026}{2013}\)
tìm x
(1+\(\frac{1}{2}\)+\(\frac{1}{3}\)+...+\(\frac{1}{2013}\)).x +2013=\(\frac{2014}{1}\)+\(\frac{2015}{2}\)+...+\(\frac{4025}{2012}\)+\(\frac{4026}{2013}\)
1, tim x bết:,frac{left(-5^4right).left(-15^2right)-5^4.left(-3^2.5right)}{left(-3^4right).25^2-left(-15^2right).225.5}:frac{x}{5}frac{-1}{6}2, cho Afrac{20}{30}+frac{20}{70}+frac{20}{126}+...+frac{20}{798}Bleft(frac{41}{2}.frac{42}{2}.frac{43}{2}...frac{80}{2}right):left(1.3.5...79right)So sánh A và B.3, Tính nhanh.frac{0,875+frac{1}{2}-7%-frac{1}{58}}{frac{1}{25}-frac{1}{2}-frac{2}{7}+frac{2}{203}}-125%HELP ME PLEASE......
Đọc tiếp
1, tim x bết:
,\(\frac{\left(-5^4\right).\left(-15^2\right)-5^4.\left(-3^2.5\right)}{\left(-3^4\right).25^2-\left(-15^2\right).225.5}\)\(:\)\(\frac{x}{5}\)\(=\frac{-1}{6}\)
2, cho A=\(\frac{20}{30}+\frac{20}{70}+\frac{20}{126}+...+\frac{20}{798}\)
B=\(\left(\frac{41}{2}.\frac{42}{2}.\frac{43}{2}...\frac{80}{2}\right):\left(1.3.5...79\right)\)
So sánh A và B.
3, Tính nhanh.
\(\frac{0,875+\frac{1}{2}-7\%-\frac{1}{58}}{\frac{1}{25}-\frac{1}{2}-\frac{2}{7}+\frac{2}{203}}\)\(-125\%\)
HELP ME PLEASE......
Tìm x, biết:
\(\frac{x+1}{2013}+\frac{x+2}{2012}=\frac{x+3}{2014}+\frac{x+4}{2010}\)