jeremiahwebster74 jeremiahwebster74
  • 12-05-2020
  • Mathematics
contestada

3.x + 5y =-27
-7x - 5y = 3

Respuesta :

sharonstoughton1970
sharonstoughton1970 sharonstoughton1970
  • 12-05-2020

Answer:

x = - 7.5

y = 11.1

Step-by-step explanation:

3x + 5y = 27

- 7x - 5y = 3

add the two equations

- 4x = 30

divide by - 4

x = - 7.5

plug x into an equation to find y

- 7 ( - 7.5 ) - 5y = 3

52.5 - 5y = 3

subtract 52.5

- 5y = - 55.5

divide by - 5

y = 11.1

hopefully this helps you out

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