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2x - 1 = -2
2x - 1 = -3
2x - 1 = -6
Va rog putin ajutor :D


Răspuns :

2x-1=-2=>2x=-1=> x= -1/2
2x-1=-3=>2x=-2=> x= -1
2x-1=-6=>2x=-5=> x= -5/2