Cual es el valor de x y w en el siguiente sistema de ecuaciones x / 2 + x / 3 = 0 , 2x + w / 2 = 15 ?

Nos enfocamos en la segunda ecuación y despejamos una variable :

<img src="https://tex.z-dn.net/?f=%20%202x%20%2B%20%5Cfrac%7Bw%7D%7B2%7D%20%3D%20-15" />

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B%282%292x%2Bw%7D%7B2%7D%20%20%3D%20-15%20" />

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B4x%2Bw%7D%7B2%7D%20%3D%20-15" />

<img src="https://tex.z-dn.net/?f=4x%2Bw%20%3D%202%28-15%29%20%20" />

<img src="https://tex.z-dn.net/?f=w%20%3D%20%20-30%20-4x%20...ahora%20ya%20sabemos%20un%20valor" />

<img src="https://tex.z-dn.net/?f=Reemplazamos%20en%20la%20segunda%20ecuacion%3A" />

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B2%7D%20%2B%20%5Cfrac%7Bw%7D%7B3%7D%20%20%3D%200%20%0A" />

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B2%7D%20%2B%20%5Cfrac%7B%28-30%20-4x%29%20%7D%7B3%7D%20%3D%200" />

<img src="https://tex.z-dn.net/?f=%0AAplicamos%20aspa%20y%20ley%20de%20signos%20%3A" />

<img src="https://tex.z-dn.net/?f=%0A%20%5Cfrac%7Bx%7D%7B2%7D%20%2B%20%5Cfrac%7B%28-30%20-4x%29%20%7D%7B3%7D%20%3D%200%20" />

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