x-y=-4;2x-y=-1

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Remember to put linear equations with variables x and y.
for example:
2x+y=8
x+3y=14

Solution for x-y=-4;2x-y=-1 system of equations: 


  • /| x-y+4 = 0| 2*x-y+1 = 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+1 = 0| y = x+4
  • x-3 = 0 // + 3
  • x = 3
  • We insert the solution into one of the initial equations of our system of equations
  • For y = x+4: 
  • y = 3+4
  • y = 7
  • We get a system of equations:
  • /| y = 7| x = 3

 

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