图书馆有科技书66套，文艺书24套，科技书比文艺书多多少套？6j1[2O,n;I/]+@9w0_3~(K
算式：提示2R'z1S2I.j2e(s-Q-n6j1[2O,n;I/]+@9w0_3~(K
答：科技书比文艺书多8o1e){:e(P5g*x.J-f-|'t:z6x1j:l,M+Z*C/x9~;p0s套。6j1[2O,n;I/]+@9w0_3~(K