Simplify the following output equations by using $($K$-$map$)$ method:

ables, $k-p$

a$)x\frac{?}{b}=ar(A)\frac{B}{b}ar(C)+\frac{A}{b}ar(B)C+$ABC$+\frac{A}{b}ar\frac{B}{b}ar(C)\frac{+}{b}ar(A)BC$

b$)$

$x\frac{?}{b}=ar\frac{A}{b}ar\frac{B}{b}ar\frac{C}{b}ar(D)+AB\frac{C}{b}ar(D)+\frac{A}{b}ar\frac{B}{b}ar\frac{C}{b}ar(D)\frac{+}{b}ar\frac{A}{b}ar\frac{B}{b}ar(C)D\frac{+}{b}ar\frac{A}{b}ar(B)\frac{C}{b}ar(D)\frac{+}{b}ar\frac{A}{b}ar\frac{B}{b}ar\frac{C}{b}ar(D)$

$+A\frac{B}{b}ar(C)D\frac{+}{b}ar(A)B\frac{C}{b}ar(D)+A\frac{B}{b}ar\frac{C}{b}ar(D)\frac{+}{b}ar(A)BCD$