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2014-09-02T22:03:09+03:00
[ 1/3 * 9/4 - 17/5 : ( 2- 29/5) ]=

= [ 3/4 - 17/5 : (10-29/5)]=

=[3/4 -17/5 * (-5/19)]=

=(3/4 + 17/19)=

= (57+51)/76=

=108/76= 54/38= 27/19