Order of operations is PEMDAS:
P - Operations within parentheses
E - Exponents
M - Multiplications
D - Divisions
A - Additions
S - Subtractions
4*2 + [8-(16-5)]
Parentheses first. Do the inner one ( ) first, then the outer one [ ]:
4*2 + [8 - (11)]
4*2 + [-3]
4*2 - 3
There are no exponents, so do the multiplications next:
(4*2=8) - 3
8 - 3
No additions left, so do the subtraction:
8 - 3 = 5
