Răspuns:
2x3:3x6:4+6-8:4x2x4:16+a=160
6:3x6:4+6-8:4x2x4:16+a=160
2x6:4+6-8:4x2x4:16+a=160
12:4+6-8:4x2x4:16+a=160
3+6-8:4x2x4:16+a=160
3+6-2x2x4:16+a=160
3+6-4x4:16+a=160
3+6-16:16+a=160
3+6-1+a=160
9-1+a=160
8+a=160
a=160-8
a=152