bbnip2004 bbnip2004
  • 14-07-2022
  • Mathematics
contestada

-3x + 2y = 9
x - 3y = 4

Respuesta :

pineapplehi
pineapplehi pineapplehi
  • 14-07-2022

Answer:

(-5, -3)

Step-by-step explanation:

Isolate x:

x - 3y = 4

x = 3y + 4

Substitute to get y:

-3x + 2y = 9

-3(3y + 4) + 2y = 9

-9y - 12 + 2y = 9

-7y = 21

y = -3

Substitute to get x:

x = 3y + 4

= 3(-3) + 4

-9 + 4

= -5

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