all good except:
-5 +(-13) = -18
btw, what is that -21 stuck in there?
I ignored it
can you check my answers
|-13| - |9| i got 4
|15| - |-3| i got 12
|-12| + |-3| i got : 15
|-31| + |-12| i got: 43
+9 + (+7) i got: 16
-21
18 + 21 i got : 39
-5 +(-13) i got: 7
-18 + (-3) i got: -21
-2 + (+17) i got: 15
15 + (-9) i got: 6
5 + 21 i got 26
-10 + 3 i got: -7
1 answer