Question

1a дробь 2a -2. + 2 дробь 4a-4

Answer 1

Ответ:

$\dfrac{a+1}{2a-2}$

Пошаговое объяснение:

$\dfrac{1a}{2a-2}+\dfrac{2}{4a-4}=\dfrac{a}{2(a-1)}+\dfrac{2}{4(a-1)}=\dfrac{2a}{4(a-1)}+\dfrac{2}{4(a-1)}=\dfrac{2a+2}{4(a-1)}=$

$=\dfrac{2(a+1)}{4(a-1)}=\dfrac{a+1}{2(a-1)}=\dfrac{a+1}{2a-2};$