Respuesta :

5.3 you do your 9-3.7 and then add 9 +-3.7
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9-(-3.7) =
9 + 3.7 = 12.7


-4.6 + 5.3 is the same thing as:
5.3 - 4.6 which = 0.7.

hope this helped! (:

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