Respuesta:
5
Explicación paso a paso:
20n + 7 - 3 = 104
20n + 4 = 104
20n = 104 - 4
20n = 100
n = 100/20
n = 5
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Respuesta:
5
Explicación paso a paso:
20n + 7 - 3 = 104
20n + 4 = 104
20n = 104 - 4
20n = 100
n = 100/20
n = 5