1x+y=7;3x-2y=11

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

Solution for 1x+y=7;3x-2y=11 system of equations: 


  • /| 1*x+y-7 = 0| 3*x-(2*y)-11 = 0
  • We try to solve the equation: 1*x+y-7 = 0
  • x+y-7 = 0 // - x-7
  • y = -(x-7)
  • y = 7-x
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 3*x-(2*(7-x))-11 = 0| y = 7-x
  • 3*x-1*2*(7-x)-11 = 0
  • 5*x-14-11 = 0
  • 5*x-25 = 0
  • 5*x-25 = 0 // + 25
  • 5*x = 25 // : 5
  • x = 25/5
  • x = 5
  • We insert the solution into one of the initial equations of our system of equations
  • For y = 7-x: 
  • y = 7-5
  • y = 2
  • We get a system of equations:
  • /| y = 2| x = 5

 

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