-3x-y=-12;x-3y=14

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

Solution for -3x-y=-12;x-3y=14 system of equations: 


  • /| 12-3*x-y = 0| x-(3*y)-14 = 0
  • We try to solve the equation: 12-3*x-y = 0
  • 12-3*x-y = 0 // - 12-3*x
  • -y = -(12-3*x) // * -1
  • y = 12-3*x
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| x-(3*(12-3*x))-14 = 0| y = 12-3*x
  • x-1*3*(12-3*x)-14 = 0
  • 10*x-36-14 = 0
  • 10*x-50 = 0
  • 10*x-50 = 0 // + 50
  • 10*x = 50 // : 10
  • x = 50/10
  • x = 5
  • We insert the solution into one of the initial equations of our system of equations
  • For y = 12-3*x: 
  • y = 12-3*5
  • y = 12-15
  • y = -3
  • We get a system of equations:
  • /| y = -3| x = 5

 

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