Respuesta:
8x + 12 = 4x + 72
8x - 4x = 72 - 12
4x = 60
x = 60 / 4
x = 15
Explicación paso a paso:
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Respuesta:
8x + 12 = 4x + 72
8x - 4x = 72 - 12
4x = 60
x = 60 / 4
x = 15
Explicación paso a paso: