Question 499314
Use BODMAS rules

B Brackets first ( ) then { } then [ ] 
O Orders (ie Powers and Square Roots, etc.) 
DM Division and Multiplication (left-to-right) 
AS Addition and Subtraction (left-to-right) 


=2+3[10(4*5-16)-30]
=2+3[10(20-16)-30]
=2+3[10(4)-30]
=2+3[40-30]
=2+3(10)
=2+30
=32