Example 7.34
To find the additive inverse, we find the opposite.
(a) The additive inverse of
is its opposite,
.
(b) The additive inverse of
is its opposite,
.
(c) The additive inverse of
is its opposite,
.
Try It 7.67
(a) 
(b) 
(c) 
Try It 7.68
(a) 
(b) 
(c) 