4x-y=0;8x+y=18

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

Solution for 4x-y=0;8x+y=18 system of equations: 


  • /| 4*x-y = 0| 8*x+y-18 = 0
  • We try to solve the equation: 4*x-y = 0
  • 4*x-y = 0 // - 4*x
  • -y = -(4*x) // * -1
  • y = 4*x
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 8*x+4*x-18 = 0| y = 4*x
  • 12*x-18 = 0 // + 18
  • 12*x = 18 // : 12
  • x = 18/12
  • x = 3/2
  • We insert the solution into one of the initial equations of our system of equations
  • For y = 4*x: 
  • y = 3/2*4
  • y = 6
  • We get a system of equations:
  • /| y = 6| x = 3/2

 

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