valpalao14 valpalao14
  • 26-02-2021
  • Mathematics
contestada

solve the system of linear equations by elimination

5х + 6у = 50
x - 6у = - 26

Respuesta :

bojo170
bojo170 bojo170
  • 01-03-2021

Answer:

{x,y} = {4,5}

Step-by-step explanation:

// Solve equation [2] for the variable  x

 [2]    x = 6y - 26

// Plug this in for variable  x  in equation [1]

  [1]    5•(6y-26) + 6y = 50

  [1]    36y = 180

// Solve equation [1] for the variable  y

  [1]    36y = 180

  [1]    y = 5

// By now we know this much :

   x = 6y-26

   y = 5

// Use the  y  value to solve for  x

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