Answer:
Value of the given expression will be 19.
Explanation:
We have to find the value of the given expression for a = 3, b = 5 and c = 12
Expression → |a + 1| + |b - c| - |-8|
We will use the property of absolute value,
|+a| = a
|-a| = a
By substituting the values of a, b and c in the given expression,
|a + 1| + |b - c| - |-8| = |3 + 1| + |5 - 12| - |-8|
= |4| + |-7| - |-8|
= 4 + 7 + 8
= 19
Therefore, value of the given expression will be 19.