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2014-10-05T20:10:17+03:00
A = 46
46 - 18 = b
b = 28
c = 28 + 39 = 67
d = 67 - 28 = 39
1 5 1
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2014-10-05T20:10:21+03:00
37+9=a => a= 46
a-18=b => 46-18=b => b= 28
b+39=c => 28+39= 67
c-28=d => 67-28=39
2 4 2