Question

Упростите выражение:
a-3/a^2-a - 1/a-1 - 4/a

Answer 1

$\frac{a - 3}{ {a}^{2} - a } - \frac{1}{a - 1} - \frac{4}{a} = \\ \\ \frac{a - 3}{a(a - 1)} - \frac{1}{a - 1} - \frac{4}{a} = \frac{a - 3 - a - 4(a - 1)}{a(a - 1)} = \frac{ - 3 - 4a + 4}{ {a}^{2} - a } = \frac{1 - 4a }{ {a}^{2} - a}$