1. 4 or -4
2 -+1/2 or +-5/2
3. 5 or -5
4. 1/4 or 1/7
5.2/3 or 2
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Answers & Comments
1. 4 or -4
2 -+1/2 or +-5/2
3. 5 or -5
4. 1/4 or 1/7
5.2/3 or 2