[] Answer []
(See below For Full Information)
[] Explanation []
Distributive Property: A (B + C) = (A * B) + (A * C)
3(10n + 9)
--------
(3 * 10) + (3 * 9)
8(x + 5)
--------
(8 * x) + (8 * 5)
12(6k - 3)
--------
(12 * 6k) - (12 *3)
a(b + 4)
--------
(a * b) + (a * 4)
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