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24-01-2017
Mathematics

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Which equation represents the statement?
Juan's age, x, is 4 times his age 15 years ago.
x = 4x + 15
x = 4(x − 15)
x = 4 + 15x
x = 4x - 15

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SapphireMoon SapphireMoon

24-01-2017

x is his current age.
x - 15 is his age 15 years ago.
If his current age, x, is four times his age 15 years ago, x - 15:
x = 4(x-15).

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