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15-04-2015
Mathematics

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Isaac is 5 years younger than Daniel. Daniel is three times the age of Martha. If x represents the age of Martha, how will you represent the age of Isaac in terms of x?

Respuesta :

15-04-2015

D = I - 5
D = 3x

Plug in 3x for 'D' in the first equation:

D = I - 5

3x = I - 5

Add 5 to both sides:

3x + 5 = I

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