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28 December, 10:16

The angles of a triangle are 128, 5x+10 and 9x. What is the value of x?

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  1. 28 December, 14:13
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    Angles in a triangle total 180°

    180=128+5x+10+9x

    180-128-10=5x+9x

    42=14x

    x=3
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