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REZOLVATI,IN MULTIMEA NUMERELOR NATURALE,INECUATIILE:5(x + 1) +2 < x +6 +x + 16

Răspuns :

5(x+1)+2<x+6+x+16
5x+5+2<2x+22
5x-2x<22-5-2
3x<15
x<15:3
x<5=>x€{0,1,2,3,4}