Algebra

posted by .

Explain why the addition method might be preferred over the substitution method for solving the system
2x-3y=5
5x+2y=6

  • Algebra -

    Two simple multiplications, and you can do it in your head.

    multiply top equation by 2
    4x-6y=10
    multiply the bottom equation by 3
    15x+6y=18

    add 19x=38
    x=2

  • Algebra -

    Thank you this does help. But why is the addition method preferred over the substitution method for solving the system
    2x-3y=5
    5x+2y=6

    I got how you got the 19x=38 but whatis the x=2(sorry not good with algebra)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    1. Explain the advantages and disadvantages of both the substitution method and the elimination method for solving a system. Help please. The only reasons I can think of is because in substitution it might be more difficult cause there's …
  2. Algebra

    Solving system of linear equations by using the apropiate method name the method and the x,y coordinates 1)X=4y+8 2x-8y=-3 2)3x-7y=6 elimination method 2x+7y=4 (2,0) 3)5x-2y=12 elimination method 3x-2y=-2 (7,23/2) 4)9x-8y=42 elimination …
  3. Business Algebra

    Produce an example of a system of equations to your fellow students and allow them to respond on which method (graphing, substitution, elimination, matrices) they would choose for solving your systems of equations. Be sure to reply …
  4. algebra

    "Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method?
  5. algebra

    Explain the difference between solving a system of equations by the algebraic method and the graphical method. Someone also wants to know why there are different methods for solving the same problem-what would you tell him?
  6. Algebra

    Explain why the addition method might be preferred over the substitution method for solving the system 2x-3y=5 5x+2y=6 Am lost on these.Please help
  7. algebra

    use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y = 12 Why is the substitution method preferred in this case?
  8. algebra

    Explain why the addition method might be preformed over the substitution method for solving the system 2x – 3y = 10 5x + 2y = 6 What is the solution of this system?
  9. Algebra

    When is the substitution method a better method than graphing for solving a system of linear equations?
  10. Algebra PLEASE HELP!!

    What advantages does the method of substitution have over graphing for solving systems of equations?

More Similar Questions