Simplify the following algebraic expressions:

$$
(16+9)x - 6 = 25x - 6
$$
The simplified expression is $\boxed{25x - 6}$.

$$
(5d + 9d) + (2 + 6)
$$

$$
(5+9)d + (2+6) = 14d + 8
$$
The simplified expression is $\boxed{14d + 8}$.

$$
(-8c + 5c) + (2 - 4)
$$

$$
(-8+5)c + (2-4) = -3c - 2
$$
The simplified expression is $\boxed{-3c - 2}$.

$$
(5-9)m - 2 = -4m - 2
$$
The simplified expression is $\boxed{-4m - 2}$.

$$
7g + (8 - 5)
$$

$$
7g + 3
$$
The simplified expression is $\boxed{7g + 3}$.

$$
(10y + 8y) + (-9 - 15)
$$

$$
(10+8)y + (-9-15) = 18y - 24
$$
The simplified expression is $\boxed{18y - 24}$.

$$
18w + (13 - 14)
$$

$$
18w - 1
$$
The simplified expression is $\boxed{18w - 1}$.

$$
(9b - 17b) + (3 - 19)
$$

$$
(9-17)b + (3-19) = -8b - 16
$$
The simplified expression is $\boxed{-8b - 16}$.

$$
(2x + 9x) + (-4 + 10)
$$

$$
(2+9)x + (-4+10) = 11x + 6
$$
The simplified expression is $\boxed{11x + 6}$.

$$
(11z + 19z) - 15
$$

$$
(11+19)z - 15 = 30z - 15
$$
The simplified expression is $\boxed{30z - 15}$.