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-2x+y = 0
x=3+2y
-2(3+2y)+y = 0
x=3+2y
-6-4y+y = 0
x=3+2y
-3y =6 /:(-3) (tu był błąd w Twoim rozumowaniu)
y=-2
x=3+2*(-2)
y=-2
x=3-4
y=-2
x=-1
-2x+y=0
x=3+2y
-2(3+2y)+y=0
x=3+2y
-6-4y-y=0
x=3+2y
-3y=6/: (-3)
x=3+2y
y=-2
x=3-4
y= -2
x=-1
y=-2
Mam nadzieje że bd dobrze :)
-2x+y = 0
x=3+2y
-2(3+2y)+y = 0
x=3+2y
-6-4y+y = 0
x=3+2y
-3y =6 /:(-3)
x=3+2y
y=-2
x=3+2*(-2)
y=-2
x=3-4
y=-2
x=-1
y=-2
POZDRAWIAM :)))