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29 December, 04:30

Find the value of x if B is between A and C, AB=4x-9, BC = 3x + 5, and AC=7

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  1. 29 December, 05:52
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    AB = 4 x - 9

    BC = 3 x + 5

    AC = 7

    B is in between A and C. So AB + BC = AC

    4x - 9 + 3 x + 5 = 7

    7 x - 4 = 7 take - 4 from LHS to the R H S (right hand side) it becomes + 4

    7 x = 7 + 4 = 11

    x = 11/7 = 1.571
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