Answer :
Is the 2+6 underneath the 64x(20-8)? If so you must multiply first and then divide and last add.
9 + 64 x 12 / 8
9 + 768 / 8
9 + 96
105
9 + 64 x 12 / 8
9 + 768 / 8
9 + 96
105
