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  • 09-02-2022
  • Mathematics
contestada


9x + 8 y = -6
-9x - 9y - 9
Elimination

Respuesta :

zsm2800 zsm2800
  • 09-02-2022

Answer:

x = 2, y = -3

Step-by-step explanation:

Add them together and get

9x + 8y - 9x - 9y = -6 + 9

-y = 3

so y = -3.

Sub it into the first equation and get

9x + 8(-3) = -6

9x - 24 = -6

9x = -6 + 24 = 18

x = 18/9 = 2

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