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x-2mai mare sau egal decat 1

Răspuns :

x-2≥1
x≥1+2
x≥3
x∈{3;4;5;6;7.....}


[tex]X-2 \geq 1\\ =\ \textgreater \ x \geq 2+1\\ =\ \textgreater \ x \geq 3[/tex]\\ =>x{3,4,5,6,7,8,9,.....}