#### Answer

$- 7.6$

#### Work Step by Step

The addends have opposite signs so subtract the absolute values. to obtain:
$|-10.8| - |3.2| = 10.8 - 3.2 = 7.6$
The sum will have the same sign as the number with the bigger absolute value. The negative number has a bigger absolute value so the sum of the two numbers must be negative.
Thus,
$-10.8 + 3.2 = - 7.6$