fractions
1/1 x 4/1
4/1
40 x 80
32000
465 - 321
144
26-15
11
48-23
25
10/20 x 5/20
50/20
18 x 26
468
4 +4
8
15+ 18
33
53-14
39
35/20 x 2/20
70/20
15 x 54
810
10+30
40
25/10 x 4/10
100/10
2 x 30
60
20+ 20
40
125/10 + 305/10
430/10
336 + 25
361
40+ 40
80