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25 October, 14:05

Bryn's age is given by the expression 3g - 7, where g is her sister Gabriela's age. If Bryn is 17, how old is Gabriela?

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Answers (2)
  1. 25 October, 15:07
    0
    3g - 7 = 17

    3g = 17 + 7

    3g = 24

    g = 24/3

    g = 8

    Gabriela is 8 years old
  2. 25 October, 17:04
    0
    17=3g-7

    +7| + 7

    24/3=3g/3

    8=g

    Gabriela is 8 years old.
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