7x+4y=24;-9x-2y=-12

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Solution for 7x+4y=24;-9x-2y=-12 system of equations: 


  • /| 7*x+4*y-24 = 0| 12-9*x-(2*y) = 0
  • We try to solve the equation: 7*x+4*y-24 = 0
  • 7*x+4*y-24 = 0 // - 7*x-24
  • 4*y = -(7*x-24) // : 4
  • y = (-(7*x-24))/4
  • y = (24-(7*x))/4
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 12-(2*((24-(7*x))/4))-9*x = 0| y = (24-(7*x))/4
  • (-1*2*(24-7*x))/4-9*x+12 = 0
  • 12-11/2*x-12 = 0
  • -11/2*x = 0
  • -11/2*x = 0 // : -11/2
  • x = 0
  • We insert the solution into one of the initial equations of our system of equations
  • For y = (24-(7*x))/4: 
  • y = (24-(0*7))/4
  • y = (0+24)/4
  • y = 24/4
  • y = 6
  • We get a system of equations:
  • /| y = 6| x = 0

 

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