5＋6= 19-8= 9 + 4= 7＋9-6=
8＋9= 12-2= 3 + 9= 14-4＋2=
5＋8= 16-10= 8 - 0= 2＋7＋6=
4＋7= 10-6= 9 - 7= 18-5＋3=
