25
10 + 5 = 15
negative 5 or -5
10
your answer is 20 ( 10+5=15+5=20)
-15
10 plus 25 divided by 5 is 15
5+5=10, +5 = 15
15 + 10 - 13 - 5 = 7
-5 then add +15 -5 subtract +15=10
It is: 5+10 = 15
It is: 10+5 = 15
There is no question for "plus 5", so obviously there's no answer.