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Write an equation using n for the variable and solve: Jill is five years older than twice Jon’s age. If the sum of their ages is ninety-two, how old is Jon?

Answer :

x - 5 = 2y

x = 2y + 5

y = .5x - 2.5

2y + 2.5 + y + 2.5 = 92

3y = 87

y = 29

x = 63

63 + 29 = 92

Jon is 29

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