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03-01-2018
Mathematics

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Sam is 5 years old. his older brother, tom, is three times as old as sam. when sam is 20, how old will tom be? 15

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mathildaramaqap1ywpc mathildaramaqap1ywpc

03-01-2018

[tex]5 + 3x = 20 \\ 3x = 20 - 5 \\ x = 15 \div 3 \\ x = 5[/tex]

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