8+8= 6+8= 7+5= 3+8= 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= 7+8-6= 3+9-6= 12-9+6= 6+8= 11-7+5= 15-6+9= 15-6= 12-7= 7+8= 11-3= 15-6= 11-8= 8+6= 3+7= 9+4= 5+7= 11-4= 13-4= 18-8= 12-5= 8+3= 6+8= 9+3-2= 12-7+7= 15-7+8= 14-8= 12-4= 2+8= 6+5= 15-7= 13-3= 5+8= 7+4= 15-9= 8+6= 4+9= 12-8= 17-7= 7+5= 3+8= 13-8+6= 14-9+6= 3+8-9= 8+3= 15-9= 11-7= 17-10= 6+8= 13-6= 14-8= 13-10= 13-4= 12-7= 13-5= 18-9= 7+6= 8+7= 11-9= 13-4+5= 8+3-9= 9+3-6= 12-9+10= 7+7= 13-7= 1 本文来源：https://www.wddqw.com/doc/2fe805be195f312b3069a558.html