Rozwiąż podany układ równań wowolnym sposbem.
x+y=2
3x+y=0
x=2-y
3(2-y)+y=0
6-3y+y=0
4y=-6
y=-1,5
x=2-(-1,5)
x=3,5
Licze na naj
x+y=2 /*-3
-3x-6y=-6
-3x+3x+y-6y=-6
-5y=-6/-5
y=6/5
y=1.2
3x+6/5=0
3x=-1.2/3
x=-0,4
x=2/5
x=2.5
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x+y=2
3x+y=0
x=2-y
3(2-y)+y=0
x=2-y
6-3y+y=0
x=2-y
4y=-6
x=2-y
y=-1,5
x=2-(-1,5)
y=-1,5
x=3,5
y=-1,5
Licze na naj
x+y=2 /*-3
3x+y=0
-3x-6y=-6
3x+y=0
-3x+3x+y-6y=-6
-5y=-6/-5
y=6/5
y=1.2
3x+y=0
3x+6/5=0
3x=-1.2/3
x=-0,4
x=2/5
x=2.5
y=6/5