2(x + 7) = 2 * x + 2 * 7 = 2x + 14
7(5 – a) = 7 * 5 - 7 * a = 35 - 7a
(c - 8) * 12 = c * 12 - 8 * 12 = 12c - 96
14(3a – 2) = 14 * 3a - 14 * 2 = 42a - 28
8(4a - 3b + 11c) = 8 * 4a - 8 * 3b + 8 * 11c = 32a - 24b + 88c
(6x + 4y - 2z) * 15 = 6x * 15 + 4y * 15 - 2z * 15 = 90x + 60y - 30z