jeremiahortega75 jeremiahortega75
  • 21-05-2020
  • Mathematics
contestada

Solve for x and y
3x + 2y = 16
7x + y = 19

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 23-05-2020

Answer:

  (x, y) = (2, 5)

Step-by-step explanation:

Double the second equation and subtract the first:

  2(7x +y) -(3x +2y) = 2(19) -(16)

  11x = 22

  x = 2

In the second equation, ...

  7(2) +y = 19

  y = 19 -14 = 5

The solution is (x, y) = (2, 5).

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