Find the absolute value for the following integer:

$-18$

Find the absolute value for the integer $-20$.

Find the absolute value for the following integer:

$+15$ 

Find the absolute value for the following integer:

$+25$ 

Using the number line add the following integers:

$6$ and $8$

Using the number line add the following integers:

$-5$ and $-6$

Using the number line add the following integers:

$-7$ and $10$

Using the number line subtract the following integers:

$7$ from $12$

Using the number line subtract the following integers:

$-9$ from $14$