Răspuns:
[56-(18x6-540:5)x9]:7=
=[56-(108-108)X9]:7=
=56-0x9:7=
=56:7=8
8
Explicație pas cu pas:
[56-(18×6-540:5)×9]:7=
[56-(108-108)×9]:7=
(56-0×9):7=
(56-0):7=
56:7=
