54-4= 22+30= 62-60= 18-9= 16-9+3=
11-8= 26+7= 51-2= 40+30= 15-8-3=
45+3= 95-50= 37-6= 12-4= 6+8-9=
30+6= 71-8= 13-5= 67-9= 23-(9-7)=