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x=2-1 i x=6-5
x=1 i x=1 tak
b x+5=5 i 5x+8=8
x=5-5 i x=(8-8)/5
x=0 x=0 tak
c x+3=6 i 3x=6/3
x= 6-3 i x=2
x=3 x=2 nie
d x+1=2 i x2=1
x=2-1 i x=1
x=1 x=1 tak
e 2x+5=3 i x2=1
x=(3-5)/2 i x=1
x=-4 i x=1 nie
f x2=0 i x+2=2
x=0 i x=2-2
x=0 x=0 tak