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D=[k|k∈N si 30 divide(k-2)}

Răspuns :

D={k|k∈N, 30|(k-2)}

30|k-2⇒
k-2∈M₃₀
k-2∈{0,30,60,90,120,...}  |+2
k∈{2,32,62,92,122,...}

D={2,32,62,92,122,...}