

Ecuaciones
Presentation
•
Mathematics
•
1st Grade
•
Hard
Iván Ortiz
Used 1+ times
FREE Resource
6 Slides • 0 Questions
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Descripción
Las ecuaciones tiene sumas, restas, multiplicación y división de números e incógnitas
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Objetivo
Resolver una ecuación consiste en encontrar el valor que debe tomar la incógnita "x" para que se cumpla la igualdad. Podemos comprobar si la solución encontrada es correcta sustituyendo la incógnita "x" por la solución. Como regla general, una ecuación de primer grado tiene una única solución.
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Pasos para resolver
Para resolver la ecuación, debemos pasar los números que tienen la incógnita a una lado de la igualdad y los que no tienen la incógnita al otro lado.
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3 está sumando en la izquierda, pasa restando al lado derecho: 4x = 21 - 2x - 3
2x está restando en la derecha, pasa sumando a la izquierda: 4x + 2x = 21 - 3
Ahora que ya tenemos separados los números con y sin la incógnita, podemos sumarlos. 6x = 18
El 6 está multiplicando en la izquierda, pasa dividiendo a la derecha. x = 18/6
Simplificando el resultado. x = 3
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Comprobando el resultado x=3
4x + 3 = 21 - 2x
4(3) + 3 = 21 - 2(3)
12 + 3 = 21 - 6
15 = 15
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