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812-4×[6×(61-3600÷12÷30)]÷9=

Răspuns :

812-4×[6×(61-3600÷12÷30)]÷9=
=812-4×[6×(61-300÷30)]÷9
=812-4×[6×(61-10)]÷9
=812-4×(6×51)÷9
=812-4×306÷9
=812-1224÷9
=812-136
=676