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Math Help - Pls help me find X and angle

  1. #1
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    Pls help me find X and angle

    Please help with this math problem:

    Angle 2 equals 10x +15 and is supplementary to angle 3 which equals 7x +42. Find x and each angle.
    Thanks.
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  2. #2
    Super Member Aryth's Avatar
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    If angle 2 and 3 are supplementary, then they add up to 180 degrees, therefore:

    angle_2 + angle_3 = 180

    Now we plug each equation in:

    10x + 15 + 7x + 42 = 180

    17x + 57 = 180

    All you do now is solve for x, plug x into the two original equations and find each individual angle.

    And you're done.

    I hope this helps.
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  3. #3
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    Thanks!

    Thanks so much. That's perfect.
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