Add.
--21.1 + 2.6
A)23.7
B)-23.7
C)-18.5
D)18.5

Question

Quizplus · Accepted Answer

To add two numbers with different signs, we subtract their absolute values and take the sign of the number with the larger absolute value. In this case, |21.1| > |2.6|, so we subtract 2.6 from 21.1 and give the result a negative sign because 21.1 is negative. 
21.1 - 2.6 = 18.5
- (18.5) = -18.5
Therefore, the answer is C) -18.5. When adding a negative number (21.1) and a positive number (2.6), we take the difference between them (21.1 - 2.6) to get the answer, which is -18.5. Therefore, the correct choice is C, -18.5.

Add. --21.1 + 2.6