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2013-12-22T11:07:41+02:00
10*a+a+10*b+a+10*c+a= 100*a+10*b+3
13*a + 10*b+ 10*c = 100*a+10*b+3 | - 10*b
13* a + 10*c = 100*a+ 3|- 13*a
10*c = 87*a+3
c=9
a= 1
b= 2;3;4;5;6;7;8.

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