-12x+3y=-15;y=4x-5

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

Solution for -12x+3y=-15;y=4x-5 system of equations: 


  • /| 3*y-12*x+15 = 0| y-(4*x)+5 = 0
  • We try to solve the equation: 3*y-12*x+15 = 0
  • 3*y-12*x+15 = 0 // - 15-12*x
  • 3*y = -(15-12*x) // : 3
  • y = (-(15-12*x))/3
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| (-(15-12*x))/3-(4*x)+5 = 0| y = (-(15-12*x))/3
  • (12*x-15)/3-4*x+5 = 0
  • 5-5 = 0
  • 0 = 0
  • The system of equations has infinitely many solutions

 

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