October 2018 1 50 Report
Suma de monomios semejantes. Duda sobre signos...
en un libro encontre esta suma de monomios:

3.m².z²
- 1/5.m².z²
- 3/4.m².z²

en el libro lo suman asi: 3.m².z² + (-1/5.m².z²) + 3/4.m².z²

no se supone que deberia ir asi? : 3.m².z² + (-1/5.m².z²) + (-3/4.m².z²)
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