Mathematics > sets-relations-and-functions > Sets

Are the following pair of sets equal? Give reasons.
(i) $A = \{2, 3\}$, $B = \{x : x \text{ is solution of } x^2 + 5x + 6 = 0\}$
(ii) $A = \{x : x \text{ is a letter in the word FOLLOW}\}$
$B = \{y : y \text{ is a letter in the word WOLF}\}$