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2014-05-20T21:45:56+03:00
-1 +5*[-6 * (-5)-17] -8 *7=

=-1 +5 * (30-17)-56=
=-1 +5*13 -56
= -57 +65
=8
2 5 2
2014-05-20T21:56:03+03:00
-1+5•[(-4-2)•(-5)-17]-(+18-10)•(+7)=
4*[-6*(-5)-17]-8*7=
4*(30-17)-56=
4*13-56=
52-56=-4