Răspuns :
420-102:3+(79-54)x6=
=420-102:3+25x6
=420-34+150
=386+150
=536
420-102:3+(79-54)x6=536
=420-102:3+25x6
=420-34+150
=386+150
=536
420-102:3+(79-54)x6=536