go2sicapandre go2sicapandre

18-09-2016
Mathematics

contestada

The sum of 10 and a number is 3 times the number. 10 3n = n 10 n = 3 n 10 n = 3n 10(n 3) = n

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haiyennguyen19 haiyennguyen19

21-09-2016

the sum of 10 and that number equal 10+n = 3n => n=5

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