x-y=4;2x+y=-4

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2x+y=8
x+3y=14

Solution for x-y=4;2x+y=-4 system of equations: 


  • /| x-y-4 = 0| 2*x+y+4 = 0
  • We try to solve the equation: x-y-4 = 0
  • x-y-4 = 0 // - x-4
  • -y = -(x-4) // * -1
  • y = x-4
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 2*x+x-4+4 = 0| y = x-4
  • 3*x = 0 // : 3
  • x = 0
  • We insert the solution into one of the initial equations of our system of equations
  • For y = x-4: 
  • y = 0-4
  • y = -4
  • We get a system of equations:
  • /| y = -4| x = 0

 

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