Question

Решите систему уравнений:

$left { {{2(3x-y)-5=2x+3y} } atop {5-(x-2y)=4y+16}} right.$

Answer 1

$left { {{2(3x-y)-5=2x+3y} atop {5-(x-2y)=4y+16}} right. ; left { {{6x-2y-5=2x+3y} atop {5-x+2y=4y+16}} right. ; left { {{4x-5y=5} atop {-x-2y=11; |cdot 4}} right. ; oplus \\ left { {{4x-5y=5} atop {-13y=49}} right. ; left { {{4x+frac{245}{13}=5} atop {y=-frac{49}{13}}} right. ; left { {{x=-frac{45}{13}=-3frac{6}{13}} atop {y=-frac{49}{13}=-3frac{10}{13}} right. \\Otvet:; ; (-3frac{6}{13},-3frac{10}{13}); .$