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dinorap1
 one year ago
How do I solve this system using the elimination method? PLEASE HELP!
5x+4y=12 and 3x3y=18
dinorap1
 one year ago
How do I solve this system using the elimination method? PLEASE HELP! 5x+4y=12 and 3x3y=18

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

dinorap1
 one year ago
Best ResponseYou've already chosen the best response.0What's happening here? 3x−3y=18 >x−y=6> 4x−4y=24

dinorap1
 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

dinorap1
 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.

dinorap1
 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

dinorap1
 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.

dinorap1
 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! :)
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