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se considera multimea A={x€N|4x+3/2x-1€Z}
Enumerati elementele multimii


Răspuns :

A={x∈N/4X+3/2X-1∈Z}
4X+3/2X-1=4x+3=2x-1⇒4x-2x=-3-1⇒2x=-4⇒x=-4/2⇒x=-2
A={-2}
X∈Z
SUCEES