Answers

2014-10-11T20:27:58+05:30
First equation a + a+d + a+2d = 15 or a+d=5 

second equation 
(100a + 10(a+d) + a+2d - (100(a+2d) + 10(a+d) + a = 594 

solve , 
I got d=-3 and a=8 , which works 
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