Find x

Discussion in 'Geometry and Trigonometry' started by nycmathguy, Sep 19, 2021.

  1. nycmathguy

    nycmathguy

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    Elementary College Geometry
    Question 1 Page 7

    20210918_193029.jpg

    AB = BC

    5x - 18 = 2x

    5x - 2x = 18

    3x = 18

    x = 18/3

    x = 6

    Check

    Let x = 3

    5(6) -18 = 2(6)

    30 - 18 = 12

    12 = 12

    It checks out to be true.

    Note: Back to precalculus tomorrow.
     
    nycmathguy, Sep 19, 2021
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  2. nycmathguy

    MathLover1

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    correct
     
    MathLover1, Sep 19, 2021
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  3. nycmathguy

    nycmathguy

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    Thanks. Back to precalculus tomorrow.
     
    nycmathguy, Sep 19, 2021
    #3
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