Answers

2014-10-13T23:56:47+08:00
1. x + 5 > 0
    x > 0-5
    x > -5

2. 2s + 7 > 21
   2s > 21 - 7
   2s > 14
    s > 7

3. r -3 < 10
   r < 10 + 3
   r < 13

4. you've got missing variable

5. 12 - 3m > -18
    -3m > -18 -12
    -3m > -30
     m < 10 
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