3y=-1/2+2;y=-x+9

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

Solution for 3y=-1/2+2;y=-x+9 system of equations: 


  • /| 3*y-(-1/2)-2 = 0| x+y-9 = 0
  • We try to solve the equation: 3*y-(-1/2)-2 = 0
  • 3*y-3/2 = 0 // + 3/2
  • 3*y = 3/2 // : 3
  • y = 3/2/3
  • y = 1/2
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| x-9+1/2 = 0| y = 1/2
  • x-17/2 = 0 // + 17/2
  • x = 17/2
  • We insert the solution into one of the initial equations of our system of equations
  • For y = 1/2: 
  • y = 1/2
  • We get a system of equations:
  • /| y = 1/2| x = 17/2

 

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