victoriarparrish
Answered

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System of equations
Y=-1/2x+4 3x-4y=12

Sagot :

Answer:

{x,y} = {8,3}

Step-by-step explanation:

// Solve equation [2] for the variable  y

 [2]    4y = 2x - 4

 [2]    y = x/2 - 1

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

  [1]    3x - 4•(x /2-1) = 12

  [1]    x = 8

// Solve equation [1] for the variable  x

  [1]    x = 8

// By now we know this much :

   x = 8

   y = x/2-1

// Use the  x  value to solve for  y

   y = (/2)(8)-1 = 3

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