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1000-[409*(6:3)+56:8*5]=

Răspuns :

1000-(409x2+7x5)=
1000-(818+350)=
1000-853=147
1000-[409*(6:3)+56:8*5]
=1000-(409*2+56:8*5)
=1000-(818+56:8*5)
=1000-(818+7*5)
=1000-(818+35)
=1000-853
=147

Sper ca te-am ajutat;)!