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3x-y=-2 2x+y=0 -2x+2y=1
y=4-2x 3x-2y=1 4x+3y=0
3x-(4-2x)=-2 y=-2x 2y=1+2x/:2
y=4-2x 3x-2razy(-2x)=1 4x+3y=0
3x-4+2x=-2 y=-2x y=1/2+x
y=4-2x 3x+4x=1 4x+3(1/2+x)=0
5x=-2+4 y=-2x y=1/2+x
y=4-2x 7x=1/:7 4x+3/2+3x=0
5x=2/:5 y=-2x y=1/2+x
y=4-2x x=1/7 7x=-3/2/:7
x=2/5 y=-2razy1/7 y=1/2+x
y=4-2razy2/5 x=1/7 x=-3/2razy1/7
x=2/5 y=-2/7 y=1/2+x
y=4-4/5 x=-3/14
x=2/5 y=1/2+(-3/14)
y=3 1/5 y=7/14-3/14
x=2/5 y=4/14
y=2/7
czyli x=-3/14
y=2/7