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Posted by on Sunday, February 12, 2012 at 2:38pm.

Find the length of segment RS if S between R and T, the length of RS is 1/3 the length of segment RT, RS=3x-3 and ST=2x+6.

  • MATH - , Sunday, February 12, 2012 at 5:23pm

    RS + ST = RT
    RT = 3RS
    RS + ST = 3RS
    3x-3 + 2x+6 = 3(3x-3)
    5x + 3 = 9x - 9
    4x = 12
    x = 3

    RS = 6
    ST = 12
    RT = 18

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