-6x-3y=18;9y=-18x-54

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

Solution for -6x-3y=18;9y=-18x-54 system of equations: 


  • /| -6*x-(3*y)-18 = 0| 9*y-(-18*x)+54 = 0
  • We try to solve the equation: -6*x-(3*y)-18 = 0
  • -6*x-3*y-18 = 0 // + -6*x-18
  • -3*y = -(-6*x-18) // : -3
  • y = (-(-6*x-18))/(-3)
  • y = (18-(-6*x))/(-3)
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 9*((18-(-6*x))/(-3))-(-18*x)+54 = 0| y = (18-(-6*x))/(-3)
  • (9*(6*x+18))/(-3)+18*x+54 = 0
  • 54-54 = 0
  • 0 = 0
  • The system of equations has infinitely many solutions

 

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