x-y=11;2x+y=4

Simple and best practice solution for x-y=11;2x+y=4. Check how easy it is, to solve this system of equations and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

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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-y=11;2x+y=4 system of equations: 


  • /| x-y-11 = 0| 2*x+y-4 = 0
  • We try to solve the equation: x-y-11 = 0
  • x-y-11 = 0 // - x-11
  • -y = -(x-11) // * -1
  • y = x-11
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| 2*x+x-11-4 = 0| y = x-11
  • 3*x-15 = 0 // + 15
  • 3*x = 15 // : 3
  • x = 15/3
  • x = 5
  • We insert the solution into one of the initial equations of our system of equations
  • For y = x-11: 
  • y = 5-11
  • y = -6
  • We get a system of equations:
  • /| y = -6| x = 5

 

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