12-02-2016
Mathematics

contestada

A number, x, decreased by the sum of 2x and 5
Please show work!!!!!! Thank you!!!!

Respuesta :

Genius102 Genius102

12-02-2016

The number is 3 times the sum of its digits

45 is added = 4+5=9 so,a common numbers in 3rd and 9th table
9,18,27,36,45...

27+45=72

2+7=9
or
4+5=9

Answer Link

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