👤
a fost răspuns

{[9×7-17+2×8]×2-123}+[55-16×(24-21)]×2

Răspuns :

Nonim
{[9•7-17+2•8]•2-123}+[55-16•(24-21)]•2=
=[(63-17+16)•2-123]+(55-16•3)•2=
=[(63-1)•2-123]+(55-48)•2=
=(62•2-123)+7•2=
=(124-123)+14=
=1+14=
=15
Floricico
{[63-17+16]*2-123} + [55-16*3]* 2 =
{62*2-123}+[55-48]* 2=
{124-123} + 7*2= 1+14= 15