the order of simplification/operation is parenthaseese exponents multiplication or division whichever comes first addition or subtraction whichever comes first
so we work the parenthasees inside to out
inside parenthaseese=(10-4/2) so no exponents so skip there's division so we do that 4/2=2/1=2 then we have (10-2) subtraction 10-2=8 (8) next parenthaseese/bracket [5 times (8)+15] multiplication 5 times 8=40 [40] other brackets {390-[40]+15} subtraction 390-40=350 {350+15} 350+15=365 outside 2 times {365} times 2 multiplication 2 times 365=730 730 times 2=1460
