14-7= 12-6= 11-6= 6+7= 17-9= 7+8= 16-9= 15-8= 17-8= 6+9= 14-9= 13-7= 11-9= 14-6= 15-6= 17-8= 11-7= 11+2= 8+6= 13-6= 15-4= 15-8= 13-9= 12-6= 16-7= 11-9= 14-3= 14-7= 16-8= 11-3= 18-7= 12-8= 13-6= 18-9= 8+6= 17-8= 13-2= 11-5= 16-7= 5+6= 12-6= 11-6= 14-6= 14-8= 12-8= 13-7= 16-7= 15-6= 12-5= 11-9= 17-8= 16-8= 14-7= 12-4= 13-5= 11-8= 14-8= 13-9= 15-6= 15-9= 16-8= 16-7= 15-9= 12-7= 12-6= 12-( )=9 11-8= 15-( )=7 12-( )=3 17-( )=9 13-5= ( )-6=7 12-( )=5 13-( )=8 ( )-7=7 14-( )=6 15-( )=9 11-( )=7 17-( )=8 ( )-5=7 13-( )=7 13-( )=5 15-( )=8 12-( )=9 17-( )=7 12-( )=6 16-( )=9 ( )-4=7 4+7= ( )-6=5 14-( )=6 18-( )=9 20-5 15-9 4-3 8-8 15-6 18-9 17-6 15-8= 本文来源：https://www.wddqw.com/doc/0c7e27d90342a8956bec0975f46527d3240ca625.html