Question

- (+10) - (+30) =
+ (-10) - (23)=
10. (2)=
-14 : (-7)=
-12 - 17=
-(-12) - 20=
(+3). (+3)=
(-20) : (+2)=

Answer 1

-10-30=-40
-10-23=-33
20
2
-29
+12 -20=-8
9
-10