Question

计算(b分之a-a分之b)除以（a分之a+b)的结果为

Answer 1

(b分之a-a分之b)除以（a分之a+b)

=(a/b-b/a)/(a+b)/a

=(a^2-b^2)*a/ab(a+b)

=(a+b)(a-b)/b(a+b)

=(a-b)/b

=a/b-1