小白兔采了9个蘑菇，小灰兔采了8个蘑菇，它们一共采了几个蘑菇？,L5d0H)[6}7P0K
算式：提示(s;Y(H2M,v.D(h:q)C(c+t2H4t;L.M/`8[,L5d0H)[6}7P0K
答：它们一共采了1\9I*M/N,w*c+r6m,t个蘑菇。,L5d0H)[6}7P0K