How do you add positive and negative numbers together? - Answers

Basics: Positive + Positive= Positive Positive + Negative= Positive or Negative, depends on the problem Negative + Negative= Negative Example: -15 + 7= ? Basically what you are doing is subtracting 7 from 15. 15 - 7= 8 Now, you turn the 8 into negative 8. -15 + 7= -8. You are doing this because let's say you have good candy and bad candy. You have 15 bad candy. You add 7 good candy. 7 of the 15 bad candy cancel out the 7 good candy. So, now you are doing 15 bad candy minus 7 bad candy, so you are left with 8 bad candy! o= posotive x=negative. This is an easier way to think of it. x x x x x x x x x x x x x x x o o o o o o o= These posotive chips cancel out 7 of the negative chips right above them. Now the left over chips is what your answer is, whether it is posotive or negative! You'll get the hang of it don't worry. ;)