simplify the following expression with the help of XOR and XNOR:

Question

X = ABCD+A(~B)(~C)D+(~A)(~B)

~ means not e.g. ~B is not b

Answer 1

A nice calculator is here. An example is

https://www.wolframalpha.com/input/?i=((A+OR+B)+AND+(NOT+B+AND+C)+OR+C)&t=crmtb01&f=rc

Answer 2

thanks