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-   -   Substitution method (https://www.askmehelpdesk.com/showthread.php?t=224695)

  • Jun 8, 2008, 05:05 PM
    robinsonangela1
    substitution method
    I am taking Algebra 1, need help with the following problems.

    1. x = 4-4y
    -X + 2y = 2

    2. 4X + 2y=4
    3X + y = 4



    Thanks
  • Jun 8, 2008, 05:38 PM
    morgaine300
    First, please see our guidelines for posting homework problems:

    https://www.askmehelpdesk.com/math-s...-b-u-font.html

    You should show us that you've at least made some type of attempt at doing your own work.

    But here is an example I did a while back on another post:
    https://www.askmehelpdesk.com/math-s...on-191151.html
    Look this over and then see if you can at least make an attempt at your problems. You can submit those attempts for someone to check, or ask about what part you don't understand.
  • Jun 8, 2008, 08:17 PM
    morgaine300
    You can't substitute back into the same equation because you can't solve it. You'll just end up with 0 = 0.
  • Jun 9, 2008, 06:01 AM
    donf
    Absoultley!

    So with X=0, solve for "Y"

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