Question

решить плиззз оч надо ​

Answer 1

$\frac{a}{a-3} - \frac{a^{2}-2a+6 }{a^{2} -3a} =\frac{a}{a-3}|^{a} - \frac{a^{2}-2a+6 }{a(a-3)}= \frac{a^{2}-a^{2}+2a-6 }{a(a-3)} = \frac{2a-6}{a(a-3)}=\frac{2(a-3)}{a(a-3)}=\frac{2}{a}$