MatemáticasBásico1 respuestas

AYUDA PLEASEEEE¡¡¡ Resuelve : 1?

AYUDA PLEASEEEE¡¡¡ Resuelve : 1. - 6x - 5y = 8 - 2x + 7y = 8 2. - 5x + 3y = 26 4x - 6y = 4 3. - 5x - 2y = 11 x + 3y = 9 4. - x + y = 28 x - 2y = - 2.

En resumen

Resuelve : 1. - 6x - 5y = 8 - 2x + 7y = 8 <img src="https://tex.z-dn.net/?f=6x%20-%20%205y%20%3D%208%0A%0A6x%20%3D%208%20%2B5y%0A%0Ax%20%3D%208%20%2B5y%20%2F%206%20.........

Mejor respuesta

TinocoO
6

Resuelve :

1.

- 6x - 5y = 8 - 2x + 7y = 8

<img src="https://tex.z-dn.net/?f=6x%20-%20%205y%20%3D%208%0A%0A6x%20%3D%208%20%2B5y%0A%0Ax%20%3D%208%20%2B5y%20%2F%206%20.........%281%29%0A%0A-2x%20%2B7y%20%3D%208%0A%0A2x%20-%207y%20%3D%20-8%0A%0A2x%20%3D%207y%20-8%0A%0Ax%20%3D%207y%20-%208%20%2F2...%282%29%0A%0A%281%29%20y%282%29%20Igualar%0A%0A%0A%0A" />

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B8%2B5y%7D%7B%5C%3A6%7D%3D%5Cfrac%7B7y-8%7D%7B2%7D" />

<img src="https://tex.z-dn.net/?f=%5Cleft%288%2B5y%5Cright%29%5Ccdot%20%5C%3A2%3D%5Cleft%287y-8%5Cright%29%5Ccdot%20%5C%3A6%0A%0A16%2B10y%3D42y-48%0A%0A10y%3D42y-64%0A%0A-32y%3D-64%0A%0Ay%3D%202%0A%0AHallar%20x%0A%0A6x%20-%205%282%29%20%3D%208%0A%0A6x%20-10%20%3D%208%0A%0A6x%20%3D%2018%0A%0Ax%20%3D%203" />

2.

- 5x + 3y = 26 4x - 6y = 4

<img src="https://tex.z-dn.net/?f=5x%20%2B%203y%20%3D%2026%0A%0A5x%20%3D%2026%20-3y%0A%0Ax%20%3D%2026%20-%203y%20%2F5%20.....%281%29%0A%0A4x%20-%206y%20%3D%204%0A%0A4x%20%3D%204%20%2B%206y%0A%0Ax%20%3D%204%20%2B%206y%20%2F4.....%282%29%0A%0AIgualar%20%3A%20%281%29%20y%20%282%29" />

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B26-3y%7D%7B5%7D%3D%5Cfrac%7B4%2B6y%7D%7B4%7D" />

<img src="https://tex.z-dn.net/?f=%5Cleft%2826-3y%5Cright%29%5Ccdot%20%5C%3A4%3D%5Cleft%284%2B6y%5Cright%29%5Ccdot%20%5C%3A5%0A%0A104-12y%3D20%2B30y%0A%0A-42y%3D-84%0A%0Ay%3D%202%0A%0AHallar%20x%0A%0A5x%20%2B%203%282%29%20%3D%2026%0A%0A5x%20%2B6%20%3D%2026%0A%0A5x%20%3D%2020%0A%0Ax%20%3D%204" />

3.

- 5x - 2y = 11 x + 3y = 9

<img src="https://tex.z-dn.net/?f=5x%20-%202%20y%20%3D%2011%0A%0A5x%20%3D%2011%20%2B%202y%0A%0Ax%20%3D%2011%20%2B2%20y%20%2F%205%20....%281%29%0A%0Ax%20%2B%203y%20%3D%209%0A%0Ax%20%3D%209%20-3y%20.........%282%29%0A%0AIgualar%20%281%29%20y%20%282%29%0A%0A" />

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B11%2B2y%7D%7B5%7D%3D9-3y" />

<img src="https://tex.z-dn.net/?f=11%2B17y%3D45%0A%0A17y%3D34%0A%0Ay%20%3D%202%0A%0AHallar%20x%0A%0A5x%20-%202%282%29%20%3D%2011%0A%0A5x%20-%204%20%3D%2011%0A%0A5x%20%3D%2015%0A%0Ax%20%3D%203" />

4.

- x + y = 28 x - 2y = - 2

<img src="https://tex.z-dn.net/?f=x%20%2B%20y%20%3D%2028%0A%0Ax%20%3D%2028%20-y%20........%281%29%0A%0Ax%20-2y%20%3D%20-2%0A%0Ax%20%3D%202y%20-2%20......%282%29%0A%0AIgualar%20%281%29%20y%20%282%29%0A%0A28-y%5C%3A%3D%5C%3A2y-2%0A%0A-y%3D2y-30%0A%0A-3y%3D-30%0A%0Ay%20%3D%2010%0A%0AHallar%20x%0A%0Ax%20%2B%20y%20%3D%2028%0A%0Ax%20%2B10%20%3D%2028%20%0A%0Ax%20%3D%2018" />.