Question

{12-5•2+(24÷3-7)]+5}=

Answer 1

{12 - 5.2+[(24 : 3 -7)+5]}
  {12 -5.2 + [ 1 + 5] }
   {12 - 5.2 + 6}
     {2 + 6}=
          8

Answer 2

(24:(-4)=-6)
12-5=7×2=14
{14-6+5=13}