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4 April, 06:32

Sarah's age is five less than twice her sister's age. Sarah is fifteen years old.

Which equation could you use to solve for the age of Sarah's sister?

2x - 5 = 15

2 (15) - 5 = x

15 = 5 - 2x

15 - 5 = 2x

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Answers (2)
  1. 4 April, 06:42
    0
    The first one would be correct
  2. 4 April, 06:50
    0
    Let her sisters age be x.

    =>sister ... x

    Sarah.

    twice x=2x. then less than 5

    => (2x-5)

    if Sarah = 15 years

    by substation, 2x-5=15
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