Which expression correctly shows the sum of opposite numbers?

Question

(−25)+(−25)=−50
(−25)+25=50
(−25)+25=0
(−25)+(−25)=0

Answer 1

The correct expression that shows the sum of opposite numbers is:

\[ (-25) + 25 = 0 \]

This shows that adding -25 (a negative number) and +25 (its opposite) results in 0.