Вариант 1 1. Упростите выражение: a) $$\frac{4b+9}{6b} + \frac{2b-3}{6b}$$; б) $$\frac{q+2}{q-2} - \frac{6-q}{q-2}$$

a) $$\frac{4b+9}{6b} + \frac{2b-3}{6b} = \frac{4b+9+2b-3}{6b} = \frac{6b+6}{6b} = \frac{6(b+1)}{6b} = \frac{b+1}{b}$$ б) $$\frac{q+2}{q-2} - \frac{6-q}{q-2} = \frac{q+2-(6-q)}{q-2} = \frac{q+2-6+q}{q-2} = \frac{2q-4}{q-2} = \frac{2(q-2)}{q-2} = 2$$