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add pos.neg. number

you will add positive and negative numbers

QuestionAnswer
-10 + 34 -44
-25 + -45 70
-69 + 69 -138
38 + -90 -128
200 + -34 -234
0 + -1 -1
256 + -9 -265
80 + -5 -85
50 + -50 -100
45 + 3 47
2 + -3421 -3423
35 + -45 -80
-24 + 35 -59
21 + 90 111
-500 + -267 767
-90 + 205 -295
-3456 + 3 -3459
-21 + 360 -381
-80 + -70 150
45 + -1 -46
Created by: alexhe
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