we are given
expression as
f(x,y,z) = (x + y')' z + (xz)' + y
we can simplify it
step-1: Distribute complements
f(x,y,z) = x'.(y')' z + (x'+z') + y
f(x,y,z) = x'yz + x'+z'+y
step-2: Combine like terms
f(x,y,z) = x'(yz+1)+z'+y
f(x,y,z) = x'+z'+y ..................Answer
