Respuesta:
Explicación paso a paso:
15x + 12 = 3x + 36
15x - 3x = 36 - 12
12x = 24
x = 2
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Respuesta:
Explicación paso a paso:
15x + 12 = 3x + 36
15x - 3x = 36 - 12
12x = 24
x = 2