108. Раскройте скобки: 1) 4 (x – 8); 2) 8 (x + 3); 3) (7-x)· 8; 4) (4a - c) 12; 5) 9 (3a-7b + 8c); 6) (5x + 8y - 3k).12.

1) $$4(x-8) = 4 \cdot x - 4 \cdot 8 = 4x - 32$$

2) $$8(x+3) = 8 \cdot x + 8 \cdot 3 = 8x + 24$$

3) $$(7-x) \cdot 8 = 7 \cdot 8 - x \cdot 8 = 56 - 8x$$

4) $$(4a - c) \cdot 12 = 4a \cdot 12 - c \cdot 12 = 48a - 12c$$

5) $$9 (3a - 7b + 8c) = 9 \cdot 3a - 9 \cdot 7b + 9 \cdot 8c = 27a - 63b + 72c$$

6) $$(5x + 8y - 3k) \cdot 12 = 5x \cdot 12 + 8y \cdot 12 - 3k \cdot 12 = 60x + 96y - 36k$$