What is the sum of all the even integers between -5 and 9

Integers are whole numbers, so they can be positive and negative numbers. Even numbers, are numbers like this: 2,4,6,8, you get it. So let's start from the negatives. Our even numbers in the negative's would be -4 and -2. Add those together, and you get -6. Now, to the positives. (Zero is neither positive or negative, so act like 0 doesnt exist. It wouldnt change the answer anyways) The positives would be 2,4,6,8. So add those together, and you get 20. 20+-6= 14. And a tip you can use: If youre doing addition with a negative, for example v

12+-4

Change the number with the negative sign to a positive, and turn the question into subtraction.

Like this

12-4.

I hope this helps!

step-by-step explanation: