2006-10-04 08:29:32 · 8 answers · asked by sheena jones 1 in Education & Reference ➔ Homework Help
9 - (-9) = 18
Basically the first negation cancels the second negative...so it is like 9 + 9. If it was 9 + (-9) then the answer would be zero.
2006-10-04 08:31:45 · answer #1 · answered by paisak79 3 · 1⤊ 0⤋
18
2006-10-04 08:48:27 · answer #2 · answered by Char 7 · 0⤊ 0⤋
18
2006-10-04 08:32:01 · answer #3 · answered by Carp 5 · 0⤊ 0⤋
9-(-9)= 9+9= 18
2006-10-04 08:56:33 · answer #4 · answered by Sean 1 · 0⤊ 0⤋
That's 9+9. Two negatives make a positive.
2006-10-04 08:31:48 · answer #5 · answered by Anonymous · 0⤊ 0⤋
18 is the evaluation.
2006-10-04 08:32:14 · answer #6 · answered by Doodlebug 5 · 0⤊ 0⤋
9 - - 9 = 9 + 9
Answer = 18
I think xD
2006-10-04 08:31:55 · answer #7 · answered by jonn0boy 3 · 0⤊ 0⤋
18. Reason is because when you have 2 negatives they make positve.
2006-10-04 08:33:54 · answer #8 · answered by cheery 3 · 0⤊ 0⤋