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2014-10-26T17:19:29+02:00
=3-2/5·{3-2/5·[3-2/5·(5/6]}=
=3-2/5·[3-2/5·(3-1/3)]=
=3-2/5·[3-2/5·8/3]=
3-2/5·(3-16/15)=
=3-2/5·(45-16)/15=3-2/5·29/15=3-58/75=(225-58)/75=167/75=2,22(6)
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