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B={x|x apartine M5 si 8<x< 25

Răspuns :

[tex]B=\left \{ x\:|\:x\: \in\:M_{5} \: \:si \: \:8 < x < 25\right \}[/tex]

[tex]8 < x < 25[/tex]

[tex]x \: \in \: (8,25)[/tex]

[tex]M_{5}=\left\{0,5,10,15,20,25,...\right\}[/tex]

[tex]x \: \in \: M_{5} = > x \: \in \: \left \{ 10,15,20 \right \}[/tex]