I'm sorry Anonymous, but hades is correct. -15 + -100 is, indeed -115. Since you are adding 2 negative numbers, obviously, this would result in another negative number. Anonymous acknowledged that combining 2 negatives equal a positive, but this is only the case in multiplication or division, not addition or subtraction. Since 100+15 is 115, -100+-15 would be -115.
I'm sorry Anonymous, but hades is correct. -15 + -100 is, indeed -115. Since you are adding 2 negative numbers, obviously, this would result in another negative number. Anonymous acknowledged that combining 2 negatives equal a positive, but this is only the case in multiplication or division, not addition or subtraction. Since 100+15 is 115, -100+-15 would be -115.