妈妈今天给芳芳买了4本练习本，加上原来的本子，芳芳现在一共有12本练习本，她原来有几本？0T*x8d8T5m-b0X2\(Z4n(P1c.~*Y9F3r;u*i7^
算式：提示(l5\-h;v'z5s0T*x8d8T5m-b0X2\(Z4n(P1c.~*Y9F3r;u*i7^
答：她原来有.J5N*[;i(D;S'T*a+~本。0T*x8d8T5m-b0X2\(Z4n(P1c.~*Y9F3r;u*i7^