Question

5y(y-3)-4y(y-2)=(y-2)(y-3)

Answer 1

5y²-15y-4y²+8y=y²-3y-2y+6;
y²-7y=y²-5y+6;
y²-7y-y²+5y-6=0;
-2y-6=0;
-2y=6;
y=6÷(-2);
y=-3;
Ответ: y=-3.