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April 2, 2015

Posted by **lili** on Tuesday, January 10, 2012 at 7:13pm.

- math -
**Reiny**, Tuesday, January 10, 2012 at 7:35pmlet the unit digit be x

tens digit is x+2

hundreds digit is x+3

x+3 + x+2 + x = 20

3x = 15

x = 5

number is 875

- math -
**PsyDAG**, Tuesday, January 10, 2012 at 7:36pmLet x = tens digit, the x + 1 = hundreds and x - 2 = ones

3x - 1 = 20

3x = 21

x = 7

x + 1 = ?

x -2 = ?

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