-4
7x2
+5
5/2
3x2
4+6
7+2
+4
3/1 x 3/4
+3
-6
6x6
2/1
5x5
1/4
-1
9+3
2+2
2/3
-3
2/4 x 6/2
+2
3/2 x 5/2
2/3 x 5/3