y=-x;y=-3/4x-1

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

Solution for y=-x;y=-3/4x-1 system of equations: 


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

 

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