Solve the following linear equations for x: 1) 5x = 25 2) 12x − 36 = 0 3) 2x + 3 = 17. Also, simplify the expression -20 - 4x.

The equation is given as:

$$5x = 25$$

$$x = 5$$

The solution is:

$$\boxed{x = 5}$$

:
The expression given is $12x - 36$. This is an expression, not an equation, so it cannot be "solved" for $x$ without an equality. However, assuming it was intended to be an equation, for example, $12x - 36 = 0$, we can solve for $x$.

Assumption: The problem intended to be $12x - 36 = 0$.

$$12x - 36 + 36 = 0 + 36$$ $$12x = 36$$

$$x = 3$$

The solution (under the assumption $12x - 36 = 0$) is:

$$\boxed{x = 3}$$

:

The equation is given as:

$$2x + 3 = 17$$

$$2x + 3 - 3 = 17 - 3$$ $$2x = 14$$

$$x = 7$$

The solution is:

$$\boxed{x = 7}$$

:
The expression given is $-20 - 4x$. This is an expression, not an equation, so it cannot be "solved" for $x$ without an equality. However, assuming it was intended to be an equation, for example, $-20 - 4x = 0$, we can solve for $x$.

Assumption: The problem intended to be $-20 - 4x = 0$.

$$-20 - 4x + 20 = 0 + 20$$ $$-4x = 20$$

$$x = -5$$

The solution (under the assumption $-20 - 4x = 0$) is:

$$\boxed{x = -5}$$

:

The equation is given as:

$$22 = 2x$$

$$11 = x$$

The solution is:

$$\boxed{x = 11}$$

:

The equation is given as:

$$c + 5 = 5$$

$$c = 0$$

The solution is:

$$\boxed{c = 0}$$

:

The equation is given as:

$$b - 11 = 12$$

$$b = 23$$

The solution is:

$$\boxed{b = 23}$$

:

The equation is given as:

$$c + 1 = 7$$

$$c = 6$$

The solution is:

$$\boxed{c = 6}$$