Ajutor va rog!!!!!!!! Calculeaza: (42:7)+(6+6):2-24:(5+3)=?

Răspuns :

(42:7)+(6+6):2-24:(5+3)=
6+12:2-24:8=
6+6-3=
12-3=9
(42:7)+(6+6):2-24:(5+3)=
6+(6+6):2-24:(5+3)=
6+12:2-24:(5+3)=
6+12:2-24:8
6+6-24:8
6+6-4
12-4=8