Respuesta :

Your answer for this is 17 hope i helped
To solve these let's use PEMDAS- Parentheses, Exponents, Multiplication/Division, Addition/Subtraction last. 
2*{6+[12/(3+1)]}
3+14
12/4=3
56+3=9
that leaves us with 
2*9-1
18-1
17.
The answer is 17