9+1= 7-5= 5+4= 9-6= 8-6 + 2=
10-5= 6+2= 5-1= 4+3= 10 -7+4=
8-8= 0+9= 6-5= 4+5= 8-5 +7 =
6+4= 8-6= 9-3= 7-6= 2 + 7- 6=
44=0 51= 6 109=1
73= 10 83= 5 97=2
1 4 9 7 0 8
<<<<<
10> 9 > = 0
5< 3< < 4
1+=9 10-=5 + 4= 9
+ 3= 9 8-= 3 - 3= 4