Reduce the following expressions to a minimum SOP form. (to 3 terms, 7 literals) My final answer was x'y'z + xz + xy The book gives y'z + xz + wxy, which I think is irreducible. My question is, for minimum SOP, do I have to find the solution that is irreducible (and also matches the condition, 3 terms & 7 literals)? I basically applied twice ab + ab' = a (adjacency) first time, wxyz' + w'xyz (where xy is a, b = wz') then this reduces to f = x'y'z + w'xz + xy + wxz and again, w' is the b, and xz is the a, so we have x'y'z + xz + xy It's true the first and last terms can be reduced. But this form is also 3 terms and 7 literals. Thank you for input!