9•8-5•9+2•5•4-22+7•(10-1•3)=

Răspuns :

9•8-5•9+2•5•4-22+7•(10-1•3)= 72-45+10•4-22+7•(10-3)= 72-45+40-22+7•7= 72-45+40-22+49= 27+18+49= 45+49= 94
9x8-5x9+2x5x4-22+7x(10-1x3)=
72-5x9+2x5x4-22+7x(10-3)=
72-45+2x5x4-22+7x7=
72-45+10x4-22+49=
72-45+40-22+49=
27+40-22+49=
67-22+49=
45+49=94