Question

Resolva o sistema:
3x - y = 1
6x - 2y = 2

Answer 1

3x-y=1    (-2_
6x-2y=2

-6x+y=-2
6x-2y-2

      y=-4
6x-2(-4)=2
6x+8=2
6x=2-8
6x=6
x=6:6
x=1

Answer 2

3x-y=1
y= 1-3x
y= 2

3x-2=1
3x=2+1
x=3/3
x= 1


Y=2 x=1
Logo 3x-Y (3-2) = 1