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27 March, 15:14

If RS = 5x + 2, ST = 7x - 12, and RT = 11x + 6, what is ST?

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  1. 27 March, 15:36
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    ST = 100

    Step-by-step explanation:

    RS + ST = RT

    (5x + 2) + (7x - 12) = 11x + 6

    5x + 7x - 11x = 6 - 2 + 12

    x = 16

    ST = 7x - 12 = 7*16 - 12 = 112 - 12

    ST = 100
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