Calinteodorgamilcomask
a fost răspuns

efectuează respectând ordinea operațiilor 54:(72-66)+28*17=. 54:9*5:5*7+(12:3*9-17)=. 45*2+(15*4-63:3*2)-9*6=​

Răspuns :

Crys157724ask

54:(72-66)+28×17=

54:6+476=

9+476=485

54:9×5:5×7+(12:3×9-17)=

6×5:5×7+(4×9-17)=

30:5×7+(36-17)=

6×7+19=

42+19=61

45×2+(15×4-63:3×2)-9×6=

90+(60-21×2)-54=

90+(60-42)-54=

90+18-54=

108-54=54

Cameliaghicaask

485, 61, 54

Explicație pas cu pas:

54:6+476=9+476=485

6*5:5*7+(4*9-17)=30:5*7+(36-17)=6*7+19=42+19=61

90+(60-21*2)-54=90+(60-42)-54=90+18-54=

=108-54=54