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Rezolvati in N : 14+2×X=20

Răspuns :

14+2x=20=>2x=20-14=6=>x=6/2=3
14+2x=20
x∈N
14+2x=20⇒2x=20-14⇒
2x=6⇒x=6/2⇒x=3
x∈N
succes