https://es-cl.khanacademy.org/math/cc-seventh-grade-math/x6b17ba59:rational-numbers-addition-and-subtraction/cc-7th-add-sub-word-problems-w-negatives/e/negative-number-addition-and-subtraction--interpretation-problems 2025-11-20T17:53:56.044440592Z Interpretar las proposiciones con números negativos Practica hacer coincidir ecuaciones de suma y resta con situaciones del mundo real. Priya exercise https://es-cl.khanacademy.org/math/cc-seventh-grade-math/x6b17ba59:rational-numbers-addition-and-subtraction/cc-7th-add-sub-word-problems-w-negatives/e/adding-negative-numbers-word-problems 2026-03-26T11:41:28.882547951Z Suma y resta de números negativos: problemas verbales Suma y resta hasta tres enteros en contexto. Sharon Friedman exercise