algebra

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In a triangle ABC , angle B is 4 times angle A and angle C is 17 degrees less than 5 times angle A. Find the size of the angles.

  • algebra -

    B=4A
    C=5A-17

    The three angles of a triangle add up to 180 degrees.

    A+B+C=180

    hint: use substitution.

  • algebra -

    21.88888

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