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Play Matching Pairs
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Suma y resta de números entero
Autor :
Omar Yesid Ramirez Tovar
-7 + 9 =
-9 + 6 =
4 + (-5) =
-5 - 7 =
7 - 4 =
3 + 5 =
-12
-1
-3
3
2
8
