2x-9y=0;4x+7y=0

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

Solution for 2x-9y=0;4x+7y=0 system of equations: 


  • /| 2*x-(9*y) = 0| 4*x+7*y = 0
  • We try to solve the equation: 2*x-(9*y) = 0
  • 2*x-9*y = 0 // - 2*x
  • -9*y = -(2*x) // : -9
  • y = (-(2*x))/(-9)
  • y = (-2*x)/(-9)
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 4*x+7*((-2*x)/(-9)) = 0| y = (-2*x)/(-9)
  • 50/9*x = 0 // : 50/9
  • x = 0
  • We insert the solution into one of the initial equations of our system of equations
  • For y = (-2*x)/(-9): 
  • y = (-2*0)/(-9)
  • y = 0/(-9)
  • y = 0
  • We get a system of equations:
  • /| y = 0| x = 0

 

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