sameed50 sameed50
  • 03-12-2019
  • Mathematics
contestada

10x - 26y=-38
6x + 13y=28

Respuesta :

BasketballEinstein
BasketballEinstein BasketballEinstein
  • 04-12-2019

Answer:

[tex]\displaystyle [\frac{9}{11}, 1\frac{111}{143}][/tex]

Step-by-step explanation:

{10x - 26y = −38

{6x + 13y = 28

½[10x - 26y = −38]

{5x - 13y = −19 >> New Equation

{6x + 13y = 28

___________

[tex]\displaystyle \frac{11x}{11} = \frac{9}{11}[/tex]

[tex]\displaystyle x = \frac{9}{11}[/tex][Plug this back into both equations above to get the y-coordinate of 1 111⁄143]; [tex]\displaystyle 1\frac{111}{143} = y[/tex]

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