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x+y=3
2x-2y=4
b)x=-1 y=0
-x+y=1
y-3x=3
c)x=0 y=3
x+y=3
2y-3x=6
d)x=-3 y=6
x+y=3
y-x=9
zdj.3.
a)x+y=3
3x+y=5
z+a=7
z+7a=19
b)a+b=2
3a+3b=6
x+y=9
-x-y=-9
c)x+y=8
-x-y=-2
x+y=5
3x+3y=7
zdj.4.2x-y=3
3y=6x-9
1)x=2 y=1
2)x=3 y=3
3)x=6 y=9
zdj.2.a) jedno
b)jedno
c)jedno
d)jedno
e)sprzeczny-zero
f)jedno