Seudónimo Seudónimo
  • 21-11-2019
  • Mathematics
contestada

Solve.


{4x+y=53
{x+y=3

Use the linear combination method.




(−3, 7)


(2, −3)


(0, 5)


(0, −3)

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 22-11-2019

Answer:

  (2, -3)

Step-by-step explanation:

Apparently, the equations are supposed to be ...

  • 4x +y = 5
  • 3x +y = 3

The solution for x can be found by subtracting the second equation from the first:

  (4x +y) -(3x +y) = (5) -(3)

  x = 2 . . . . . . . matches the second answer choice

Y can be found from either equation:

  y = 5 - 4x . . . . . subtract 4x from the first equation

  y = 5 -4(2) = -3

The solution is (x, y) = (2, -3).

Answer Link

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