Question

решение системы 2x+3y=5 3x+2y=14

Answer 1

{2x - 3y = 5 |*(-2)
{3x + 2y = 14 |*3

{-4x - 6y = -10
{9x + 6y = 42
Прибавим уравнения
-4x + 9x = -10 + 42
5x = 32
x = 6.4
y=2.6

Ответ: (6.4;2.6)

Answer 2

x-2y=7 x+2y=-1

Answer 3

2х=6

Answer 4

х=3

Answer 5

у=-2

Answer 6

(-2;3)