13-4*1=9
13-4*3=1
xx-x*x=x
-10-1
-1x-2
14-3*1=9
13-4*1=9
-1x-5
-1x-7
-1x-8
-1x-9
-1x-4
14-2*3=8
13-2*4=5
1x-10
14
16
18
1x-9
12
15
21
24
27
16
20
28
32
36
25
35
40
45
49
56
63
64
72
81
13-4*1=9
13-4*3=1
xx-x*x=x
-10-1
-1x-2
14-3*1=9
13-4*1=9
-1x-5
-1x-7
-1x-8
-1x-9
-1x-4
14-2*3=8
13-2*4=5
1x-10
14
16
18
1x-9
12
15
21
24
27
16
20
28
32
36
25
35
40
45
49
56
63
64
72
81