Napisz układ równan x-3y=3 i x-y=5
x-3y=3
x-y=5 => x=5+y
5+y-3y=3
-2y=3-5
-2y=-2 / :(-2)
y=1
x=5+y
x=5+1
x=6
x-y=5
x=3+3y
3+3y-y=5
2y=2 /:2
x=3+3*1=3+3=6
odp;
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x-3y=3
x-y=5 => x=5+y
5+y-3y=3
-2y=3-5
-2y=-2 / :(-2)
y=1
x=5+y
x=5+1
x=6
x-3y=3
x-y=5
x=3+3y
3+3y-y=5
2y=2 /:2
y=1
x=3+3*1=3+3=6
odp;
x=6
y=1