Tìm x biết
a) \(\frac{x+7}{2010}+\frac{x+6}{2011}=\frac{x+5}{2012}+\frac{x+4}{2013}\)
b) \(\frac{11}{x^2+7}+\frac{23}{x^2+19}=3-\frac{7}{y+3}\)
Tìm số hữu tỉ x biết:
a) \(\frac{x+4}{2009}+\frac{x+3}{2010}=\frac{x+2}{2011}+\frac{x+1}{2012}\)
b) \(\frac{x-2011}{2010}+\frac{x-2011}{2011}+\frac{x-2011}{2012}=\frac{x-2011}{2013}+\frac{x-2011}{2014}\)
bài 1: tìm x biết: a) \(\frac{x+7}{2010}+\frac{x+6}{2011}=\frac{x+5}{2012}+\frac{x+4}{2013}\)
b)\(\frac{11}{x^2+7}+\frac{23}{x^2+19}=3-\frac{7}{x^2+3}\)
bài 2: tìm x sao cho:a) 2x-3 có gía trị dương b) 13-5x có giá trị âm c) \(\frac{x+3}{2x-1}>0\)
d) \(\frac{x+7}{x+3}< 1\)
NHỚ CÓ LỜI GIẢI NHA, MÌNH SẼ TÍCH CHO BẠN NÀO NHANH NHẤT NHA (thứ 6 mình nộp rồi, nhanh lên nha các bạn)
tìm x: (làm đầy đủ nhaaa)
a) 2x. (x-\(\frac{1}{3}\)) = 0
b)\(\frac{x+8}{2007}+\frac{x+7}{2008}=\frac{x+6}{2009}+\frac{x+5}{2010}\)
c)\(\frac{11}{x^2+7}+\frac{23}{x^2+19}=3-\frac{7}{x^2+3}\)
Tìm x biết
\(\frac{x+1}{2013}+\frac{x+2}{2012}=\frac{x+3}{2011}+\frac{x+4}{2010}\)
Tìm x :
a) \(\text{}\frac{x+5}{2011}+\frac{x+4}{2012}=\frac{x+3}{2013}+\frac{x+2}{2014}\)
b) \(\frac{5x-1.45}{6}+\frac{5x-1.45}{7}+\frac{5x-1.45}{8}=\frac{5x-1.45}{9}+\frac{5x-1.45}{10}\)
\(a.\frac{x-1}{2011}+\frac{x-2}{2012}=\frac{x-3}{2013}+\frac{x-4}{2014}\)
\(b.\frac{x-1}{2011}+\frac{x-2}{2010}=\frac{x-3}{2009}+\frac{x-4}{2008}\)
1.Tìm x
a, \(-\frac{23}{5}.\frac{50}{23}\le x\le-\frac{13}{5}:\frac{23}{17}\)
b,\(-4\frac{1}{3}.\left(\frac{1}{2}-\frac{1}{6}\right)\le x\le-\frac{2}{3}\left(\frac{1}{3}-\frac{1}{2}-\frac{3}{4}\right)\)
c,\(\frac{x-1}{2014}+\frac{x-2}{2013}=\frac{x-3}{2012}+\frac{x-4}{2011}\)
Giải phương trình :\(\frac{x+1}{2015}+\frac{x+2}{2014}+\frac{x+3}{2013}+\frac{x+4}{2012}+\frac{x+5}{2011}+\frac{x+6}{2010}=0\)