Question

Evaluate each expression if r=-2, n=-3 and t=3.
1. |8-t|+3
2. |t-3| -7
3. 5+|3-n|
4. |r+n|-7
5. |n-t|+4
6. -|r+n+t|

Answer 1

So this is just arithmetic, and knowledge that |x| = x if x > 0 or -x if x < 0. For example, the first one:
\[\left| 8-t \right| + 3 = \left| 8-3 \right| + 3 = 5 + 3 = 8\]

Answer 2

Okay thank you (: