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Mathematics, 31.03.2021 17:20 ReonRamseyz

Había 7 monedas en una caja. Ravi agregó j monedas y el número total de monedas fue 18. Responde las siguientes preguntas:
- ¿Cuántas monedas agregó Ravi?
- ¿ Observas una igualdad en el problema?}
- ¿ Qué es una ecuación lineal?

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