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19 September, 03:50

My sister is 18 years old. My brother says that his age minus nineteen Is equal

to my sister's age. How old is my brother?

Enter an equation, using b as your variable, to find how old my brother Is.

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Answers (2)
  1. 19 September, 04:03
    0
    Answer: 18

    Step-by-step explanation:

    Sisters age = b

    Brothers age = b + 19
  2. 19 September, 04:17
    0
    37 years old

    Step-by-step explanation:

    lets keep the brother's age as b.

    so using the equation:

    b-19=18 (add 19 on both sides)

    b=37

    So her brother is 37 years old
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