2x+y=-6;x-y=-3

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

Solution for 2x+y=-6;x-y=-3 system of equations: 


  • /| 2*x+y+6 = 0| x-y+3 = 0
  • We try to solve the equation: 2*x+y+6 = 0
  • 2*x+y+6 = 0 // - 2*x+6
  • y = -(2*x+6)
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| x+2*x+3+6 = 0| y = -(2*x+6)
  • 3*x+9 = 0 // - 9
  • 3*x = -9 // : 3
  • x = -9/3
  • x = -3
  • We insert the solution into one of the initial equations of our system of equations
  • For y = -(2*x+6): 
  • y = -(6-3*2)
  • y = -(6-6)
  • y = 0
  • We get a system of equations:
  • /| y = 0| x = -3

 

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