Ответ:
\(50.6a-4-12a+15=38.6a+11\).
При \(a=\frac13\): \(38.6\cdot\frac13+11=\frac{193}{15}+\frac{165}{15}=\frac{358}{15}=23\frac{13}{15}\).
Ответ: \(\frac{358}{15}=23\frac{13}{15}\).
\(50.6a-4-12a+15=38.6a+11\).
При \(a=\frac13\): \(38.6\cdot\frac13+11=\frac{193}{15}+\frac{165}{15}=\frac{358}{15}=23\frac{13}{15}\).
Ответ: \(\frac{358}{15}=23\frac{13}{15}\).