yvetteuwamahoro855 yvetteuwamahoro855
  • 12-12-2019
  • Mathematics
contestada

1) y = 2x – 17
-3x – y=-13

Respuesta :

gmany
gmany gmany
  • 02-02-2020

Answer:

x = 6, y = -5 → (6, -5)

Step-by-step explanation:

[tex]\left\{\begin{array}{ccc}y=2x-17&\text{subtract}\ 2x\ \text{from both sides}\\-3x-y=-13\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}-2x+y=-17\\-3x-y=-13\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad-5x=-30\qquad\text{divide both sides by (-5)}\\.\qquad\boxed{x=6}\\\\\\\text{Substitute the value of x to the first equation}\\\\y=2(6)-17\\y=12-17\\\boxed{y=-5}[/tex]

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