Respuesta:
Explicación paso a paso:
2a - 1 = 15
2a = 15 + 1
2a = 16
a = 16/2
a = 8
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Respuesta:
a = 8
Explicación paso a paso:
2a - 1 = 15
2a = 15 + 1
2a = 16
a = 16/2
a = 8