negative
-500x1
-500
100+5
105
10x2
20
2/1
2
10-2
8
-752 - -147
-605
900+1200
2100
20x2
40
6/2
3
90-10
80
-123 x 2
-246
-2x-5
10
32x3
96
24/8
65-5
60
-90 x 4
-360
80-(-80)
160
400x3
1200
90/9
10
75-15
50
-800 x 2
-1600
600-98
502
8212x9212
75648944
468/976
0.4795
894-496
398