Ответ:
- \(15,(3)=15+0,(3)=15+\frac{1}{3}=\frac{46}{3}\).
- \(0,(7)=\frac{7}{9}\).
- \(1,2(3)=\frac{123-12}{90}=\frac{111}{90}=\frac{37}{30}\).
- \(0,(12)=\frac{12}{99}=\frac{4}{33}\).
- \(7,(5)=7+0,(5)=7+\frac{5}{9}=\frac{68}{9}\).
Ответ: \(\frac{46}{3};\ \frac{7}{9};\ \frac{37}{30};\ \frac{4}{33};\ \frac{68}{9}\).
