Ответ:
\(1/2=2/4\); \(2/4=1/2\); \(1/2=4/8\); \(4/8=2/4\); \(1/4=2/8\); \(4/8=1/2\); \(2/4=4/8\); \(6/8=3/4\); \(3/4=6/8\); \(4/4=8/8\).
\(1/2=2/4\); \(2/4=1/2\); \(1/2=4/8\); \(4/8=2/4\); \(1/4=2/8\); \(4/8=1/2\); \(2/4=4/8\); \(6/8=3/4\); \(3/4=6/8\); \(4/4=8/8\).