Answer
$-11$
Work Step by Step
RECALL:
The order of operations follow the PEMDAS rule:
First Priority:
P - Parentheses or grouping symbols
Second Priority:
E - Exponents
Third Priority:
M/D - Multiplication or Division, whichever comes first from the left
Fourth Priority:
A/S - Addition or Subtraction, whichever comes first from the left
Use the PEMDAS rule to obtain:
$=6-[ 3\cdot 5 + 2 \cdot (1) ]
\\=6-[15 + 2]
\\=6 - 17
\\=-11$