2x4
8
2+6
2\4
2
4-2
4x6
24
12+7
19
4/12
3
10-6
4
6x7
42
23+10
33
10
20-10
9x11
99
123+123
246
10/120
12
365-231
134
12x7
84
125,876+457,876
583,752
12/144
567,899-345,678
222,221