resolver las siguientes sumas y restas.
a- 10 + (+5) =
b- −3 − (−7) = c-
−5 + (−9) = d-
−12 + (+3) =
a- 10 + (+5) =
b- −3 − (−7) = c-
−5 + (−9) = d-
−12 + (+3) =
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Respuesta:
a 15
b10
c-4
d15
asi las resuelvo yo con calculadora sientifica es mas facil