adding integers
1- + 1 +?
0
-5-4
-1
5/12
0.416
23 x 55
1265
1/4
.25
7 + -5
2
-5-12
17
1/3
0.33
121 x 59
7139
-20 + 30
10
-39-23
62
4/5
.8
1234 x 592
730528
103+-121
-18
-113-2114
-2227
9/12
.75
-65749 x 64720
-4255275280
532874+-752938
-220064
-98100-98989
-197089
15677/21000
0.74
-75830 x 94604
-7173821320