3x=15-6y;9x+18y=45

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Solution for 3x=15-6y;9x+18y=45 system of equations: 


  • /| 3*x+6*y-15 = 0| 9*x+18*y-45 = 0
  • We try to solve the equation: 3*x+6*y-15 = 0
  • 3*x+6*y-15 = 0 // - 3*x-15
  • 6*y = -(3*x-15) // : 6
  • y = (-(3*x-15))/6
  • y = (15-(3*x))/6
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 18*((15-(3*x))/6)+9*x-45 = 0| y = (15-(3*x))/6
  • (18*(15-3*x))/6+9*x-45 = 0
  • 45-45 = 0
  • 0 = 0
  • The system of equations has infinitely many solutions

 

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