Si multiplicas un número por 5 y luego le sumas 20, obtienes 45. ¿Cuál es el número?
Descripción: Este reto matemático, aparentemente sencillo, invita a los alumnos a desarrollar su habilidad para resolver ecuaciones de primer grado. Se les presenta un problema verbal que requiere traducir el lenguaje natural al lenguaje algebraico, para luego resolver la ecuación resultante. La pregunta
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