Question

2 x + y = 5
x +2 y= 4

Answer 1

y=5-2x

x+2(5-2x)=4
x+10-4x=4
-3x=-6
x=-6/-3
x=2

y=5-(2.2)
y=5-4
y=1

Answer 2

Olá Carollana

2x + y = 5

x + 2y = 4

y = 5 - 2x

x + 10 - 4x = 4

3x = 10 - 4 = 6

x = 2

2 + 2y = 4
2y = 2

y = 1

S = (2,1)