+ means Or
* means And

0+0=0
0+1=1
1+0=1
1+1=1

0*0=0
0*1=0
1*0=0
1*1=1
F= A + BC + (DE+F)(A+BC)'
(with this assumption A=1,B=0,C=0,D=1,E=0)
F=1+ ... =1 (don't compute other parts because 1+everything=1)