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(-7)+(-9)
-16
(8+(-1))+13
20
20+((-13)+(-9))
-2
(100-70)+(-29)
1
(-23)+(-77)
-100
102+8
100
(-29)+((-31)+21)
-39
(-104)+30
-74
((-21)+21)+111
111
(11+22)+((-14)+(-10))
9
