Question

Tìm x,y thuôc z sao cho5/x-4/3=1/6

Answer 1

\(\frac{5}{x}-\frac{4}{3}=\frac{1}{6}\)

\(\Leftrightarrow\frac{5}{x}=\frac{1}{6}+\frac{4}{3}\)

\(\Leftrightarrow\frac{5}{x}=\frac{1}{6}+\frac{4\cdot2}{6}\)

\(\Leftrightarrow\frac{5}{x}=\frac{1}{6}+\frac{8}{6}\)

\(\Leftrightarrow\frac{5}{x}=\frac{9}{6}\)

\(\Leftrightarrow\frac{5}{x}=\frac{3}{2}\)

\(\Rightarrow x\cdot3=2\cdot5\)

\(\Rightarrow x=\frac{2\cdot5}{3}=\frac{10}{3}\)

Mà \(x\inℤ\)nên x không thỏa mãn

P/S : y đâu?