Question

Помогите прошу!!! Даю 22 балла!!
Решите систему уравнений

{ y-3x=-15
5x+2y=14

Answer 1

$\displaystyle\left \{ {{y-3x=-15} \atop {5x+2y=14}} \right. \\\\\\\displaystyle\left \{ {{-3x+y=-15} \ |\cdot(-2) \atop {5x+2y=14}} \right. \\\\\\+\displaystyle\left \{ {{6x-2y=30} \atop {5x+2y=14}} \right. \\---------\\11x=44\\\\x=44:11\\\\x=4\\\\y=3x-15=3\cdot4-15=12-15=-3\\\\Otvet:\boxed{(4 \ ; \ -3)}$