4+7= 9-4= 10-0= 8+8= 16-3=
3-3= 9+9= 8-5= 14+2= 5+7=
8+6= 10+3= 0+14= 7+6= 9+5=
19-9-3= 11+4+2= 16+3-2= 8+( )=15 ( )+7=16