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Danielle is x years old. Her sister is five years older and her brother is half Danielle’s age. Write an expression in simplest form for the sum of their ages
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Danielle is x years old. Her sister is five years older and her brother is half Danielle’s age. Write an expression in simplest form for the sum of their ages

User Djna
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1 Answer

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Let x = Danielle, x + 5 = her sister, and .5x = her brother.

x + x + 5 + .5x = the sum of their ages.

Then we simplify to get 2.5x + 5 = the sum of their ages.
User Vasile Tomoiaga
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