Odpowiedź:
{ 2x-3y-1=(x-5y)/2-1/2 /•2
1 3/4y-1/4x=3/2y+1/4
{ 4x-6y-2=x-5y-1
7/4y-1/4x=3/2y+1/4 /•4
{ 3x-y=1
7y-x=6y+1
y-x=1
y=-x+1
{ 3x+x-1=1
{ 4x=2 /:4
{ x=2/4
{ x=1/2
y=-1/2+1
y=1/2