|6-4| = |6|-|4| = 6-4 = 2
|4-6| ≠ |4|-|6| = 4-6 = -2
-b is the additive inverse of b, so the statement is always true.
for each mathematical statement below determine if it's always, sometimes, or never true.
a. |m-n| = |m| - |n|
b. b + (-b) = 0
2 answers
thanks