If -T = 5, what is T ?

To determine the value of T, we need to isolate it in the equation -T = 5.

Here's the step-by-step process:

1. Begin with the equation: -T = 5.
2. To isolate T, we need to get rid of the negative sign. We can do this by multiplying both sides of the equation by -1. Remember, when we multiply an equation by a negative number, the inequality sign also reverses.
So, multiplying both sides by -1, we get: (-1)(-T) = (-1)(5).
This simplifies to: T = -5.

Therefore, the value of T is -5.