x=0+y;3x+12y=15

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

Solution for x=0+y;3x+12y=15 system of equations: 


  • /| x-y+0 = 0| 3*x+12*y-15 = 0
  • We try to solve the equation: x-y+0 = 0
  • x-y = 0 // - x
  • -y = -x // * -1
  • y = x
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 3*x+12*x-15 = 0| y = x
  • 15*x-15 = 0 // + 15
  • 15*x = 15 // : 15
  • x = 15/15
  • x = 1
  • We insert the solution into one of the initial equations of our system of equations
  • For y = x: 
  • y = 1
  • We get a system of equations:
  • /| y = 1| x = 1

 

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