Respuesta :

cnaldridge

Answer:

Solution :

{x,y} = {0/14261512,4}

Step-by-step explanation:

Solve by Substitution :

// Solve equation [2] for the variable y

[2] y = x + 4

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

[1] 12x - 5•(x +4) = -20

[1] 7x = 0

// Solve equation [1] for the variable x

[1] 7x = 0

[1] x = 0

// By now we know this much :

x = 0

y = x+4

// Use the x value to solve for y

y = (-0/14261512)+4 = 4

27gracelynncaudill

Answer:y = (-0/14261512)+4 = 4

Step-by-step explanation:[2]    y = x + 4

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

  [1]    12x - 5•(x +4) = -20

  [1]    7x = 0

// Solve equation [1] for the variable  x

  [1]    7x = 0

  [1]    x = 0

// By now we know this much :

   x = 0

   y = x+4

// Use the  x  value to solve for  y

   y = (-0/14261512)+4 = 4

Solution :

{x,y} = {0/14261512,4}

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