Question

4x+3y= -4
6x + 5y = - 7 ( решите систему уравнения )

Answer 1

{4x+3y = -4|*-5
{6x+5y = -7|*3
{-20x-15y = 20
+
{18x+15y = -21
-2x = -1
x = 1/2
4*1/2+3y = -4
2+3y = -4
3y = -6
y = -2

Ответ:(1/2; -2)