填空:B/a+3=()/a(a+3)*M-2n/m平方-2mn=1/()
问题描述:
填空:B/a+3=()/a(a+3)*M-2n/m平方-2mn=1/()
答
b/a+3=(ab)/a(a+3)
(m-2n)/m(m-2n=1/(m)是一道题,中间是乘号