Addition
-2+(-4)
-6
9-(-2)
11
8(-9)
-72
-15+8+(-9)
-16
-320-(-106)
-214
-5+(-4)
-9
-8-9
-17
2(-11)(-5)
110
-20-(-30)
10
-6+(-2)+14
6
7+(-11)
-4
-7-(-11)
4
-6(-7)
42
13+20+(-17)+(-13)
3
-8(-20)(5)
800
-2+9
7
-12-(-11)
-1
-13(-4)
52
-4(12)(-5)
240
-2200-(-3500)
1300
-20+4
-16
-47-34
-81
-4(-16)
64
-7(9)(-6)
378
-15(4)(-9)
540