👤

55×15+[90÷30×(9×9+19)÷3]-9×9=​

Răspuns :

55•15+[90:30•(9•9+19):3]-9•9=

1. (9•9+19)=81+19=100

55•15+(90:30•100:3)-9•9=

2. 90:30•100:3=

3•100:3=

300:3=

100

3. 55•15+100-9•9=

55•15=825; 9•9=81

825+100-81=

925-81=

844