Question

Simplifique as frações algébricas : $\frac{8a-6}{9-12a}$

Answer 1

$\dfrac{8a-6}{9-12a}=\dfrac{2\cdot\left(4a-3 \right )}{-3 \cdot\left( -3+4a\right)}\\ \\ =\dfrac{2\cdot\left(4a-3 \right )}{-3 \cdot\left(4a-3\right)}\\ \\ =\dfrac{2}{-3}\\ \\ \\ \boxed{\dfrac{8a-6}{9-12a}=-\dfrac{2}{3}}$