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a)14x-5=9,x apartine N*
b)2t+1=1, t apartine Z*
c)5y-3= -18,y apartine {0,1,3,-3} AJUTOOORRRRRRRRRRRRRRR


Răspuns :

A)14X-5=9=>14X=9+5=>14X=14=>X=14:14=>x=1
B)2t+1=1=>2t=1-1=>2t=0=>t=0:2=>t=0
C)5y-3=-18=>5y=-18+3=>5y=-15=>y=-15:5=>y=-3