2x+7y=0;-6x-y=-40

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Remember to put linear equations with variables x and y.
for example:
2x+y=8
x+3y=14

Solution for 2x+7y=0;-6x-y=-40 system of equations: 


  • /| 2*x+7*y = 0| 40-6*x-y = 0
  • We try to solve the equation: 2*x+7*y = 0
  • 2*x+7*y = 0 // - 2*x
  • 7*y = -(2*x) // : 7
  • y = (-(2*x))/7
  • y = (-2*x)/7
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 40-6*x-((-2*x)/7) = 0| y = (-2*x)/7
  • 40-40/7*x = 0 // - 40
  • -40/7*x = -40 // : -40/7
  • x = -40/(-40/7)
  • x = 7
  • We insert the solution into one of the initial equations of our system of equations
  • For y = (-2*x)/7: 
  • y = (-2*7)/7
  • y = -14/7
  • y = -2
  • We get a system of equations:
  • /| y = -2| x = 7

 

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