Решим задание 464:
1) $$2(a + 5) = 2 \cdot a + 2 \cdot 5 = 2a + 10$$
2) $$8(7 - x) = 8 \cdot 7 - 8 \cdot x = 56 - 8x$$
3) $$12(x + y) = 12 \cdot x + 12 \cdot y = 12x + 12y$$
4) $$(c - 9) \cdot 11 = c \cdot 11 - 9 \cdot 11 = 11c - 99$$
5) $$(8 + y) \cdot 16 = 8 \cdot 16 + y \cdot 16 = 128 + 16y$$
6) $$15(4a - 3) = 15 \cdot 4a - 15 \cdot 3 = 60a - 45$$
7) $$7(6a + 8b) = 7 \cdot 6a + 7 \cdot 8b = 42a + 56b$$
8) $$10(2m - 3n + 4k) = 10 \cdot 2m - 10 \cdot 3n + 10 \cdot 4k = 20m - 30n + 40k$$
9) $$ (24x + 17y - 36z) = 24x + 17y - 36z$$