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24 December, 13:04

Two angels are complementary. One angle is 18 degrees more than 2 times the other. Find the angles.

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  1. 24 December, 13:22
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    Two complementary angles = 90°

    X = 18 + 2y

    X + y = 90

    Plug first equation into second

    18 + 2y + y = 90

    18 + 3y = 90

    18 - 18 + 3y = 90 - 18

    3 y = 72

    3y/3 = 72/3

    Y = 24

    Plug y into 2nd formula

    X + 24 = 90

    X + 24 - 24 = 90 - 24

    X = 66
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