Solve for Z?

Question

ZB + ZC = A + B. Solve for Z?

Answer 1

ZB + ZC  =  A + B

Take out 'Z' as common in LHS 

Z(B + C)  =  (A + B)

Devide above equation with (B + C)

[ Z(B + C) ] / (B + C)  =  (A + B)/ (B + C)

 Z  =  (A + B) / (B + C)

Answer :

 Z  =  (A + B) / (B + C)