###### Exercise5

Evaluate the following expressions which involve the absolute value:

1. $$\displaystyle{ \left| 7 \right| = }$$

2. $$\displaystyle{ \left| -1 \right| = }$$

3. $$\displaystyle{ \left| 0 \right| = }$$

4. $$\displaystyle{ \left| {13+\left(-4\right)} \right| = }$$

5. $$\displaystyle{ \left| {-5-\left(-3\right)} \right| = }$$

in-context