Ответ:\(0,(6)=\frac69=\frac23\).\(1,(55)=1+\frac{55}{99}=\frac{14}{9}\).\(0,(513)=\frac{513}{999}=\frac{19}{37}\).\(2,(7263)=2+\frac{7263}{9999}=2+\frac{807}{1111}=\frac{3029}{1111}\).