3x + 4 < 5x - 7 = 3x - 5x < -7 - 4 = -2x < -11 = x < 11/2 correct?? thank u
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Originally Posted by jvignacio 3x + 4 < 5x - 7 = 3x - 5x < -7 - 4 = -2x < -11 = x < 11/2 correct?? thank u Everything was going fine until the end. It's x > 11/2. Why? Because when you multiply by a negative number, the inequality sign changes. If c < 0 and a > b, then ca < cb.
Originally Posted by Chop Suey Everything was going fine until the end. It's x > 11/2. Why? Because when you multiply by a negative number, the inequality sign changes. If c < 0 and a > b, then ca < cb. ah yeah i thought so . thank u!
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