-5x-7=-4y;3x+2y=31y

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Solution for -5x-7=-4y;3x+2y=31y system of equations: 


  • /| -5*x-(-4*y)-7 = 0| 3*x+2*y-(31*y) = 0
  • We try to solve the equation: -5*x-(-4*y)-7 = 0
  • 4*y-5*x-7 = 0 // + -5*x-7
  • 4*y = -(-5*x-7) // : 4
  • y = (-(-5*x-7))/4
  • y = (7-(-5*x))/4
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 2*((7-(-5*x))/4)-(31*((7-(-5*x))/4))+3*x = 0| y = (7-(-5*x))/4
  • (2*(5*x+7))/4+(-1*31*(5*x+7))/4+3*x = 0
  • 3*x-145/4*x-203/4 = 0
  • -133/4*x-203/4 = 0
  • -133/4*x-203/4 = 0 // + 203/4
  • -133/4*x = 203/4 // : -133/4
  • x = 203/4/(-133/4)
  • x = -29/19
  • We insert the solution into one of the initial equations of our system of equations
  • For y = (7-(-5*x))/4: 
  • y = (7-(-5*(-29/19)))/4
  • y = (7-(29/19*5))/4
  • y = (7-145/19)/4
  • y = -12/19/4
  • y = -3/19
  • We get a system of equations:
  • /| y = -3/19| x = -29/19

 

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