Б 14) \(\frac{12a+5b}{3b}-\frac{2a-b}{3b}\)

\(\frac{12a+5b}{3b}-\frac{2a-b}{3b}=\frac{12a+5b-2a+b}{3b}=\frac{10a+6b}{3b}\).

Ответ: \(\frac{10a+6b}{3b}\)