SOLUTION: when do you switch the greater than sign to a less than sign

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Question 667567: when do you switch the greater than sign to a less than sign
Answer by ReadingBoosters(3246) About Me  (Show Source):
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When dividing or multiplying both sides by a negative.
Ex.
-3x > 21
cross%28-3%29x%2Fcross%28-3%29+%3E+21%2F-3
x < -7
...
x%2F-2+%3E+-4
cross%28-2%29%28x%2Fcross%28-2%29%29+%3E+-4%28-2%29
x < 8
...
When reading an equation in the reverse direction
x > 24
24 < x