Question

思考下面的问题,并寻找规律：（1）已知a/b=c/d=3,求a+c/b+d的值； （2）已知a/b=c/d=e/f=3,

Answer 1

=3 3+9/1+3=3(1+3)/(1+3) =3

=3 道理同上