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Soluția inecuatiei 3x+1< sau= 10,x€N

Răspuns :

x ∈ ℕ 
[tex]3x+1 \leq 10[/tex]
[tex]3x \leq 10-1[/tex]
[tex]3x \leq 9[/tex]
[tex]x \leq \frac{9}{3} [/tex]
[tex]x \leq 3[/tex]
x ∈ ℕ => x ∈ {0, 1, 2, 3}