Evaluate if r=-8: |-15-r|+|r|=
you plug in -8 for r.
I -15- (-8) l + l -8 l
l -7 l+ l-8 l
since you have absolute value bars anything in absolute value turns positive and you take away the bars.
soo.......
7+8
=15
Take the absolute value of -15+8=-7
absolute value of -7=7
Add the absolute value of -8 to 7
the absolute value of -8=8
7=8=15
To evaluate the expression, we substitute the value of r with -8:
|-15 - (-8)| + |-8| =
Simplify the expressions inside the absolute value symbols:
|-15 + 8| + |-8| =
|-7| + 8 =
The absolute value of -7 is 7, so the expression becomes:
7 + 8 =
Adding them together:
7 + 8 = 15
Therefore, when r = -8, the expression |-15-r| + |r| = 15.