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x/3-2/3=2x+4
x-2=4+2
-x=6 / : (-1)
x=-6
b) 2/3 = 3x+2/2x-2
2/3=3x+x-2 /*3
2=9x+3x-6
-9x-3x=6-2
-12x=4 /:(-12)
x=-4/12
c) 6x-1/x+1 = 2,3/1,2
nie wiem
i d tez nie wiem