If a & # 178; + AB AB & # 178; = 0, then the value of a / B-B / A-A & # 178; + B & # 178; / AB is?

If a & # 178; + AB AB & # 178; = 0, then the value of a / B-B / A-A & # 178; + B & # 178; / AB is?

A / B-B / a = A & # 178; - B & # 178; / ABA / B-B / A-A & # 178; + B & # 178; / AB = (A & # 178; - B & # 178; - A & # 178; - B & # 178;) / AB = - 2b & # 178; / AB = - 2b / AA & # 178; + AB AB & # 178; = 0 may not be solved here. Please see if the following condition is wrong, please