Раскройте скобки 2 (x+7) 7 (5-a) (c-8) * 12 14 (3a-3b+11c) (6x+4y-2z) * 15

1) 2 * (x + 7) = 2 * х + 2 * 7 = 2 * х + 14;

2) 7 * (5 - a) = 7 * 5 - 7 * а = 35 - 7 * а;

3) (c - 8) * 12 = 12 * с - 8 * 12 = 12 * с - 96;

4) 14 * (3 * a - 3 * b + 11 * c) = 14 * 3 * a - 14 * 3 * b + 14 * 11 * c = 42 * a - 42 * b + 154 * c;

5) (6 * x + 4 * y - 2 * z) * 15 = 15 * 6 * x + 15 * 4 * y - 15 * 2 * z = 90 * х + 60 * у - 30 * z.