Question

Сократите дробь
$\frac{2y + 3y}{7 {y}^{2} + ay }$
$\frac{3a - 2}{18 - 27a}$
$\frac{ {y}^{2} - 25}{2y - 10}$
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Answer 1

Ответ:

Объяснение:

(2y+3y)/(7y²+ay)=(5y)/(y(7y+a))=5/(a+7y)

(3a-2)/(18-27a)=(3a-2)/(-9(3a-2))=-1/9

(y²-25)/(2y-10)=((y-5)(y+5))/(2(y-5))=(y+5)/2