\(\dfrac{8}{x}+\dfrac{1}{5}=\dfrac{2}{5}+\dfrac{1}{3}\)

\(\left(\dfrac{1}{4}+X\right)\) x \(\dfrac{2}{3}=\dfrac{6}{7}\)

\(\left(X-\dfrac{3}{5}\right):\dfrac{1}{5}=\dfrac{5}{8}\)

\(X\) x \(\dfrac{2}{5}-\dfrac{1}{2}x\dfrac{3}{5}=\dfrac{3}{10}\)

\(\dfrac{7}{20}-\dfrac{1}{2}:\) \(X\) \(=\dfrac{3}{20}\)

\(\dfrac{7}{9}:\left(x-\dfrac{4}{9}\right)=\dfrac{1}{2}\)

\(\dfrac{5}{3}\) x \(X\) \(-\) \(\dfrac{2}{3}=\dfrac{1}{3}\)

\(\dfrac{5}{3}-X\) x \(\dfrac{2}{3}=\dfrac{1}{3}\)

X + \(\dfrac{7}{8}x\dfrac{16}{21}=\dfrac{3}{2}\)

X \(-\) \(\dfrac{2}{3}=\dfrac{7}{2}\)

X : \(\dfrac{3}{4}=\dfrac{7}{8}-\dfrac{1}{4}\)

\(X\) x \(\dfrac{3}{5}\) + \(X\) x \(\dfrac{1}{2}\) = \(\dfrac{11}{15}\)

6 x \(X\) = \(\dfrac{5}{8}:\dfrac{3}{4}\)

X : \(\dfrac{3}{4}=\dfrac{7}{8}-\dfrac{1}{4}\)

X + \(\dfrac{3}{4}=\dfrac{5}{3}\)

\(\dfrac{25}{8}:\) X = \(\dfrac{5}{16}\)

X + \(\dfrac{7}{15}=\dfrac{6}{5}\)

X : \(\dfrac{28}{49}=\dfrac{7}{2}\)

Tìm X

\(\dfrac{1}{3}\) x \(X\) = \(\dfrac{1}{8}\)

\(X\) x \(\dfrac{6}{5}=\dfrac{7}{2}\)

X : \(\dfrac{8}{9}=\dfrac{27}{32}\)

Tìm  X

A, 216 : X - 117 : X + 18 : X = 9

B, 256 x \(X\) \(-\) 215 x \(X\) = 29643

Tìm X

A ,2006 : X + 1955 = 2014

B, \(X\) x 35 \(-\) 35 = 1225

C, 981 x (\(X\) + 189 ) = 185409

Tìm X 

A , \(X\) x 274 \(-\) 256 \(X\) x = 5130

B \(X\) x 18 x 19 = 43434