leyla29 leyla29
  • 17-02-2021
  • Mathematics
contestada

-9x– 4y = -20
5x + 4y = 4

Respuesta :

Markoxmara
Markoxmara Markoxmara
  • 17-02-2021

Answer:

(x,y)

(4,-4)

Step-by-step explanation:

-9x– 4y = -20

5x + 4y = 4

-4x = -16

x = 4

5(4) + 4y = 4

20 + 4y = 4

4y = -16

y = -4

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