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2014-05-25T14:40:55+03:00
A+b=48
b/a=3 r 4
b=3a+4
a+3a+4=48
4a+4=48
4a=48-4
4a=44
a=44/4
a=11

b=3 x 11+4=33+4=37
1 5 1