lessly04 lessly04

29-01-2016
Mathematics

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the sum of 18 and a number

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apologiabiology apologiabiology

29-01-2016

dat means 18+'a number'
aka
18+x

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Аноним Аноним

30-01-2016

A number is an unknown variable, so you can use a letter.
Sum means addition.

18+ x

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