15 is a positive number.
(+12)-(+15) = -3
15 ( 1,3,5,15)
negative 15 plus positive three = negative twelve -15 + +3 = -12
15 C is positive
Negative 15 plus positive 20 equals 20 minus 15, which equals 5.
The sum of the first 15 positive even numbers is 240. (Simply square 15, then add 15 to the result: 15 x 15 = 225. 225 + 15 = 240).
+15 and -15.
They are additive inverses.
The result will be positive in this case.
1,3,5,15
+15 - (-3) = 15 + 3 = 18