Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

LoveYou*69

  • 3 years ago

Could someone please help me with this? For the following system, if you isolated y in the second equation to use the Substitution Method, what expression would you substitute into the first equation? 5x + 3y = 9 12x + 3y = 18

  • This Question is Closed
  1. jim_thompson5910
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    If you isolate y in the second equation, then... 12x + 3y = 18 3y = 18-12x 3y = -12x+18 y = -12x/3 + 18/3 y = -4x + 6 So you would substitute the expression -4x+6 in for 'y' in the first equation to go from 5x+3y = 9 to 5x+3(-4x+6) = 9

  2. jim_thompson5910
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    From there, you can solve for x and then use that solution to find y.

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy