\(\Rightarrow x\left(\frac{1}{3}-\frac{1}{8}+\frac{1}{8}-\frac{1}{13}+...........+\frac{1}{28}-\frac{1}{33}\right)=\frac{-7}{6}\)
\(\Rightarrow x.\left(\frac{1}{3}-\frac{1}{33}\right)=\frac{-7}{6}\)
\(\Rightarrow x.\frac{10}{33}=\frac{-7}{6}\)
\(\Rightarrow x=\frac{-7}{6}:\frac{10}{33}\)
\(\Rightarrow x=\frac{-231}{60}\)
Tìm x :
a) \(\text{}\frac{x+5}{2011}+\frac{x+4}{2012}=\frac{x+3}{2013}+\frac{x+2}{2014}\)
b) \(\frac{5x-1.45}{6}+\frac{5x-1.45}{7}+\frac{5x-1.45}{8}=\frac{5x-1.45}{9}+\frac{5x-1.45}{10}\)
Tìm x, biết:\(\frac{5x-1}{3}=\frac{7y-6}{5}=\frac{5x-7y-7}{4x}\)
tìm x,y biết : \(\frac{5x-1}{3}=\frac{7y-6}{5}=\frac{5x-7y-7}{4x}\)
\(\text{Tìm x,y}:\frac{5x-1}{3}=\frac{7u-6}{5}=\frac{5x-4y-7}{4x}\) :
Tìm x, y biết :
\(\frac{5x-1}{3}=\frac{7y-6}{5}=\frac{5x+7y}{4x}\)= 7
\(\frac{3x+2}{5x+7}=\frac{5x-1}{5x+1}\) tìm x
tim x;y
\(\frac{5x-1}{3}=\frac{7y-6}{5}=\frac{5x+7y-7}{4x}\)
\(\frac{5x+3}{1}=\frac{\frac{7}{15}}{5x+3}\) Tìm x
bai 1 Tìm x,y \(\frac{5x-1}{3}=\frac{7y-6}{5}=\frac{5x-4y-7}{4x}\)
