\(\Leftrightarrow x+150=980.\frac{4}{5}+\frac{4}{5}.\left(-1\right)\)
\(\Leftrightarrow x+150=\frac{4}{5}.\left[980+\left(-1\right)\right]\)
\(\Leftrightarrow x+150=\frac{4}{5}.979\)
\(\Leftrightarrow x+150=783,2\)
\(\Leftrightarrow x=633,2\)
Tìm x, biết:(1-\(\frac{x}{599}\)).(5+\(\frac{5}{4}+\frac{5}{28}+...+\frac{5}{22050}\))=\(\frac{2}{3}\)
tìm x biết
1) 1/7=8/-x
5) (x-\(2\frac{1}{4}\)) :( -5/6)=3
6) -8:( \(4\frac{1}{5}\)x+ 3/10)=\(4\frac{4}{9}\)
Tìm x biết :
\(\frac{x+1}{49}+\frac{x+2}{48}+\frac{x+3}{47}\frac{x+4}{46}+\frac{x+5}{45}=-5\)
Tìm \(\frac{x}{y}\) (x , y thuộc Z) biết \(\frac{x-5}{y-4}=\frac{5}{4}\) và x - y = 6
Tìm x biết:
a) \(-4\frac{3}{5}.2\frac{4}{23}
tìm x ; y biết : \(\frac{x-4}{x-3}=\frac{4}{3};x-y=5\)
\(A=\frac{\frac{2}{5}-\frac{2}{7}+\frac{3}{11}}{\frac{7}{5}-\frac{7}{9}+\frac{7}{11}}:\frac{\frac{1}{3}-\frac{1}{4}+\frac{1}{5}}{\frac{7}{6}-\frac{7}{8}+\frac{7}{10}}\)
a)Tìm A
b)tìm x biết A . x + \(\frac{5}{6}\) = \(-\frac{3}{4}\)
Tìm x biết :
a, \(\frac{x-2}{3}\)+ \(\frac{x-2}{4}=\frac{x-2}{5}+\frac{x-2}{6}\)
b,\(\frac{x+3}{7}+\frac{x+4}{6}=\frac{x+5}{5}+\frac{x+6}{4}\)
Tìm x biết : \(\frac{x-4}{x-3}=\frac{4}{3}\) và x - y = 5
