Сократите дробь (3a-3b)/(a^2-b^2)

Ответ:

\[\ \frac{3a - 3b}{a² - b²} = \frac{3 \cdot (a - b)}{(a - b)(a + b)} = \frac{3}{a + b}\ \]

\[\frac{3 - 2a^{\backslash a}}{2a} - \frac{1 - {a^{2}}^{\backslash 2}}{a^{2}} =\]

\[= \frac{a(3 - 2a) - 2 \cdot \left( 1 - a^{2} \right)}{2a^{2}} =\]

\[= \frac{3a - 2a^{2} - 2 + 2a^{2}}{2a^{2}} =\]

\[= \frac{3a - 2}{2a²}\]