Question

r:3x-2y=1/2 s:y=-3x+2

Answer 1

3x -2y = 1/2....ec1

y = -3x + 2
3x + y = 2....ec2


3x - 2y = 1/2
(-1)3x +y = 2
-----------------
3x - 2y = 1/2
-3x - y = -2
-------------------
-3y = -3/2
y = (-3/2 )/-3
y = -3/-6
y = +1/2


hallamos "x"
3x + y = 2
3x + 1/2 = 2
3x = 2-1/2
3x = 3/2
x = (3/2) /3
x = 1/2


comprobación :

3x + y = 2
3(1/2) + 1/2 = 2
3/2 + 1/2 = 2
4/2 = 2
2 = 2