{x-y=6
{y=-1
{3x-2y=6
{x=y
{3x+y=10
{y=2x
{-x-3y=5
{y=-2x
{4x-y=6
{y=x
{x-2y=-3
{2x=3y=8
x-y=6
y=-1
x=6-y
x=6-(-1)
x=6+1
x=7
3x-2y=6
x=4
2y=6+3x
2y=6+3*4
2y=18:2
y=9
3x+y=10
y=2x
3x+2x=10
5x=10:5
x=2
-x-3y=5
y=-2x
-x-3*(-2)=5
-x+6x=5
-5x=5:(-5)
x=-1
4x-y=6
y=x
4x-x=6
3x=6:3
tego ostatniego nie umialam zrobic :)
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x-y=6
y=-1
x=6-y
x=6-(-1)
x=6+1
x=7
3x-2y=6
x=4
2y=6+3x
2y=6+3*4
2y=18:2
y=9
3x+y=10
y=2x
3x+2x=10
5x=10:5
x=2
-x-3y=5
y=-2x
-x-3*(-2)=5
-x+6x=5
-5x=5:(-5)
x=-1
4x-y=6
y=x
4x-x=6
3x=6:3
x=2
tego ostatniego nie umialam zrobic :)