Question

27+13-28

-50+27-50-45

+47+23-60+80

7+17-8-2

9+14-8-17

Answer 1

27+13-28=
40-28=
12

-50+27-50-45=
-23-95=
-118

47+23-60+80=
47-37+80=
10+80=
90

7+17-8-2=
24-10=
14

9+14-8-17=
23-25=
-2