A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
How do I solve this system using the elimination method? PLEASE HELP!
5x+4y=12 and 3x3y=18
anonymous
 one year ago
How do I solve this system using the elimination method? PLEASE HELP! 5x+4y=12 and 3x3y=18

This Question is Closed

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0hint the second equation can be factored

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What's happening here? 3x−3y=18 >x−y=6> 4x−4y=24

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh, did you delete your response...?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0the objective of the elimination method is to pick a variable and make the coefficients equal and opposite so that will be eliminated when the equivalent equations are added

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1\(5x+4y=12\) \(3x3y=18\) > \(xy=6\) > \(4x4y=24\) divided times by 6 6 \(5x+4y=12\) \(4x4y=24\) ~~~~~~~~~ Add the two equations now, and tell me what you get.

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1I deleted my reply, to modify it....

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1MISTAKE: Oh, divide by 3, not 6.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0correction equation 2 divided by 3

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1yes, just said that

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh, I see what you're doing now. Don't you mean multiplied by 4 for the 2nd step?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1Then you have to add the equations.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I was taught a different method to solve this though. Are you sure this is a valid way to solve for the elimination method?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1yes, I am positive

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1(good that you noticed my typo errors, thank you)

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0glad you are paying attention

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0he choose to get rid of y's now add and solve for x

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0yes that is the way and I was never in any of his classes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright I'll solve for it then! 9x=36 > (9/9)x=(36/9) > x=4

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.1yes, x=4 is right.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And then you plug the value of x into one of the equations to get y. I can understand it from here! Thank you two so much for the help! :)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.