Explications étape par étape:
3y+x-3=0.........1
y+2x-1=0..........2
-y+3x+6=0......3
The solution.
From equation 2 and 3
y+2x-1=0..........2
-y+3x+6=0......3 We combine the two equations
5x+5=0
5x=-5
X=-5/5
X=-1
Substitute the value of x in to equation. 1
3y+7y-3-3=0
10y-6=0
10y=6
y=6/10
