买来3元、4元和5元的电影票共200张,用去780元,其中4元和5元的张数相等,每种票各买了多少张?;i8y4q,E
算式:提示2l'I'p1N(a;R;i8y4q,E
答:3元有*f8B;X3e6C1F8J.a9S张,4元和5元各有+K+V1J6w;I*u0x,M/Q+l6J5M5v.?+z2d:r,_5w张。;i8y4q,E