Equations system
It was based on a Maths Olympics' exercise in my region. I have adapted for 12 years old kids.
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Math sequence puzzle (easy)
Solve this math puzzle. Not only geniuses can solve this one. Answer can be found in a minute. Please share your answer to this math sequence puzzle
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ecuación 13
Sistema de 3 variables. ¿Es necesario plantear como sistema?
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