If a and b are opposite numbers to each other, then the following four equations must hold______
A. a+b=0
B. a+b=1
C. |a|+|b|=0
D. |a|+b=0
Answer:A
If a and b are opposite numbers to each other, then the following four equations must hold______
A. a+b=0 B. a+b=1 C. |a|+|b|=0 D. |a|+b=0