同学们倡议捐400本图书给“手拉手“学校．一至六年级各捐了58本，还要捐多少本就达到了400本？([2T8u3P+}:u5h7X(`.],k'F+k'z9~-|*X)s/i
算式：提示6N/m8|:J1H:G'v([2T8u3P+}:u5h7X(`.],k'F+k'z9~-|*X)s/i
答：还要捐6A7\9s)h5o3d本就达到了400本。([2T8u3P+}:u5h7X(`.],k'F+k'z9~-|*X)s/i