Satan's Extra Credit Assignment

As you know, the annual orgy of giving in the name of the Dark Lord is just around the corner! However, it seems the Prince of Lies
is also subject to torment in Hell and has been given a homework assignment featuring his most feared subject, simple math. He has dispatched me
as his most humble messenger to ask for help, and in return he'll promise to cut down on the use of Pineapples as torture devices in his fiery den (because Fuck Pineapples),
or some other reward that doesn't assume you're the type of person that will be burning in a pit for all eternity.

10-30=
10-2=
-14+5=
-10+-9=
3x3=
(6x3)+1=
2-1=
20+-1=
-3x5=
48/4=
7x3=
-10x2=
27/3=
(3x4)+3=
(7+10)-3=
0-2=
2+-23=
5x4=
100/5=
-4x2=
10-15=
45/3=
7x-2=
1+4=
-5x5=
10+-25=
63/3=
0-1=
-20+2=
1-6=
(-5x4)+1=
(30x0)-5=
2-7=
121/11=
-10+1=
7x-2=
-2+-5=
0+9=
1x-20=
-5+-14=
-28/2=
20-5=
4x5=
-20+1=
1+1+3=
2-1=
4x2=
(5x5)+1=
-5x5=
11+3=
14-1=
(2x2)+3=
-3x4=
1+1=
-5x-2=
(-3x7)x-1=
0-1=
10-2=
3-1=
3x-3=
1x1=
10+12=
5x5=
0-5=

Now begins Beelzebub's arithmetic paper...