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25 November, 19:08

Angle ABC is a straight angle. Solve for x. AB (3x-7) BC (7x-13)

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  1. 25 November, 20:00
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    A straight angle means it equals 180 degrees.

    3x - 7 + 7x - 13 = 180

    10x - 20 = 180

    10x = 200

    x = 20
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