9+{9+9x[9+9x(9-9:3)]}=

Răspuns :

9+(9+9x(9+9x6))=
9+(9+9x(9+54))=
9+(9+9x63)=
9+(9+567)=
9+576=585
9+{9+9×[9+9 ×(9-6)]}=
9+[9+9×(9+9×3)]=
9+[9+9×(9+27)]=
9+(9+9×36)=
9+(9+324)=
9+333=
342