Chapter 1 (Quick Summary)

Rule 1 Multiply or divide by a positive number - keep direction the same. For C > 0, A < B and AC < BC have the same solution. To show: Rule 2 Multiply or divide by a negative number - change direction. For C < 0, A < B and AC > BC have the same solution. To show: (The rules also hold true for dividing by C on both sides, and also for >, ) ................
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