9 - -9 =

9 - (-9) = 9 + 9 = 18

A negative times a negative is always a positive.

I hope this helps. Thanks for asking.

i need a website that will help me with my integers

good evening i want to do this 16 - 8 -24 =

To solve this problem, you can use the basic rule of subtracting a negative number. When you subtract a negative number, it is essentially the same as adding the positive counterpart of that number.

In this case, we have 9 - (-9). To simplify this expression, we can rewrite it as 9 + 9, because subtracting a negative number is the same as adding its positive form.

So, 9 + 9 equals 18. Therefore, 9 - (-9) is equal to 18.