Odpowiedź :
3x + y = -13 / · -3
2x + 3y = -4
-9x - 3y = 39
2x + 3y = -4
-7x = 35
x = 35/-7
x = -5
pzdr :)
Y=-13-3x
2x+3(-13-3x)=-4
2x-39-9x=-4
-7x=-4+39
-7x=35
X= -35/7
X=-5
Y=-13-3(-5)
Y= -13+15
Y= 2
2x+3(-13-3x)=-4
2x-39-9x=-4
-7x=-4+39
-7x=35
X= -35/7
X=-5
Y=-13-3(-5)
Y= -13+15
Y= 2