1) - 2-2=0
2) - 0+33=33
3) - 33-64 = -31
4) - -31+64= 33
5) - 33-77 = -44
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Answers & Comments
1) - 2-2=0
2) - 0+33=33
3) - 33-64 = -31
4) - -31+64= 33
5) - 33-77 = -44