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19 May, 05:41

A triangle has one angle measuring 3X degrees a second angle measures 2X + 20°

And the third angle measures 4X - 20° what is the value of X

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  1. 19 May, 07:32
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    Answer : x = 20

    Explanation:

    3x + 2x + 20 + 4x - 20 = 180

    (3+2+4=9)

    9x + 20 - 20

    The 20s cancel each other out because one is positive and the other is negative

    9x = 180

    9x/9 = 180/9

    X = 180 divided by 9

    X = 20
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