8+4= 10+9= 13-4= 14-7= 8+5= 6+8= 8+4= 19-10= 12-6= 4+8= 5+8= 12-5= 14-8= 7+8= 3+9= 12-9= 11-3= 4+7= 12-6= 13-7= 14-6= 11-5= 8+3= 6+5= 11-8= 13-6= 12-8= 7+5= 8+3= 7+6= 9+2= 14-9= 12-6= 11-3= 11-7= 15-6= 7+5= 6+8= 7+8= 11-3= 15-6= 11-8= 8+6= 3+8= 7+4= 5+7= 11-7= 13-4= 12-8= 12-5= 8+3= 6+8= 9+3= 12-7= 15-7= 5+8= 7+6= 14-8= 12-4= 7+8= 6+5= 15-7= 13-6= 6+8= 7+4= 15-9= 8+6= 7+4= 12-8= 11-7= 7+5= 3+8= 13-8= 14-9= 3+8= 7+6= 3+9= 11-7= 12-5= 6+8= 7+4= 8+3= 13-6= 14-8= 13-6= 13-4= 12-7= 12-5= 13-6= 7+6= 8+7= 11-7= 13-4= 8+3= 9+3= 12-9= 17-9= 6+8= 7+8= 11-8= 1 8+4= 12-7= 5+6= 13-6= 11-8= 6+8= 12-7= 8+7= 12-6= 4+7= 9+3= 7+8= 16-7= 20-8= 9+8= 6+7= 8+5= 13-9= 15-7= 18-9= 11-4= 11-5= 13-8= 15-7= 11-7= 6+8= 8+4= 13-6= 7+6= 9+5= 15-9= 6+5= 11-3= 7+8= 5+7= 12-6= 8+3= 14-9= 7+5= 11-8= 6+5= 8+6= 8+3= 7+4= 12-8= 11-9= 11-7= 12-4= 12-9= 17-9= 8+5= 7+6= 12-7= 11-6= 11-8= 5+7= 13-6= 8+5= 3+9= 12-7= 12-8= 9+7= 4+9= 6+8= 4+7= 15-9= 8+6= 7+4= 12-8= 11-4= 7+5= 8+3= 13-8= 14-9= 4+8= 7+6= 9+3= 11-7= 12-5= 8+6= 7+4= 3+7= 13-6= 14-8= 13-7= 13-4= 12-7= 12-5= 13-6= 7+6= 8+7= 11-7= 13-4= 8+3= 9+3= 12-9= 17-9= 6+8= 7+8= 11-8= 2 15-7= 11-7= 6+8= 8+4= 13-6= 7+6= 9+5= 15-9= 6+5= 11-3= 7+8= 5+7= 12-6= 8+3= 14-9= 7+5= 11-8= 6+5= 8+6= 8+3= 7+4= 12-8= 11-9= 11-7= 12-4= 12-9= 17-9= 8+5= 7+6= 12-7= 7+4= 12-8= 11-7= 7+5= 3+8= 13-8= 14-9= 3+8= 7+6= 3+9= 11-7= 12-5= 6+8= 7+4= 8+3= 13-6= 14-8= 13-6= 13-4= 12-7= 12-5= 13-6= 7+6= 8+7= 11-7= 13-4= 8+3= 9+3= 12-9= 17-9= 6+8= 7+8= 11-8= 12-8= 11-4= 7+5= 8+3= 13-8= 14-9= 4+8= 7+6= 9+3= 11-7= 12-5= 8+6= 7+4= 3+7= 13-6= 14-8= 13-7= 13-4= 12-7= 12-5= 13-6= 7+6= 8+7= 11-7= 13-4= 8+3= 9+3= 12-9= 17-9= 6+8= 7+8= 11-8= 13-6= 11-8= 6+8= 12-7= 8+7= 3 本文来源：https://www.wddqw.com/doc/0b1fa1f0366baf1ffc4ffe4733687e21ae45ffcd.html