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7/8 < x < 7/9 x∈Q , x=


7/3 < x < 7/2 x∈N, x=


Răspuns :

[tex] \frac{7}{8} < x < \frac{7}{9} [/tex]

[tex]x \: \in \: ( \frac{7}{8} , \frac{7}{9} )[/tex]

[tex] \frac{7}{3} < x < \frac{7}{2} [/tex]

[tex] \frac{7}{3} = 2.(3)[/tex]

[tex] \frac{7}{2} = 3.5[/tex]

[tex]x \: \in \: \mathbb{N} = > x = 3[/tex]