Решить систему уравнений {2x-3y=-8 {x+4y=7

2x - 3y = -8
x + 4y = 7 | * (-2)

2x - 3y = -8
-2x - 8y = -14

2x - 3y - 2x - 8y = -8 - 14
-11y = -22
y = 2

x + 4y = 7
x + 4 * 2 = 7
x + 8 = 7
x = 7 - 8
x = -1

ответ: -1;2