Ask Experts Questions for FREE Help !
Ask
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #1

    Jun 21, 2011, 08:09 PM
    Solving system by Eliminatation!
    -3x-3y=-6
    x+6y=-8

    help please...
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
    Senior Member
    		  
    #2

    Jun 21, 2011, 08:22 PM
    If you double the first equation, you can then add the two equations together and the y-terms will cancel. That will allow you to solve for x. Once you know x, you can just substitute its value into either of the equations, and solve for y.
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #3

    Jun 21, 2011, 08:32 PM
    Can to please solve it?
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #4

    Jun 21, 2011, 08:35 PM
    Comment on jcaron2's post
    Can you just solve it please?
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #5

    Jun 21, 2011, 08:37 PM
    Comment on jcaron2's post
    And thank youu so muccch!
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
    Senior Member
    		  
    #6

    Jun 21, 2011, 08:42 PM
    I can help YOU solve it, but I can't do your homework FOR you.

    It'll just take a second if we work through it together. :)

    What do you get when you double the first equation? (In other words, multiply every term by two).
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #7

    Jun 21, 2011, 08:43 PM
    Comment on jcaron2's post
    I got it! Thankkkksss sooo mucccch!
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
    Senior Member
    		  
    #8

    Jun 21, 2011, 08:44 PM

    Or if you just want to know if you got the right answer, post what you got and I'll tell you if it's right.
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
    Senior Member
    		  
    #9

    Jun 21, 2011, 08:45 PM

    Good job!
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #10

    Jun 21, 2011, 08:48 PM
    Comment on jcaron2's post
    I got it! -_-
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #11

    Jun 21, 2011, 08:48 PM
    Comment on jcaron2's post
    Thankkks :)
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #12

    Jun 21, 2011, 10:54 PM

    Hi pinkey1995, please avoid abusing the cmment feature and think well of your post before typing and submitting it.

    Quote Originally Posted by pinkey1995
    i got it! -_-
    Notice also that jcaron2 said that before you said you got it.
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #13

    Jun 22, 2011, 11:17 AM
    Comment on Unknown008's post
    ..
    Pratik_Pradhan's Avatar
    Pratik_Pradhan Posts: 3, Reputation: 3
    New Member
    		  
    #14

    Jun 23, 2011, 09:51 AM
    Multiply first equation by 2
    Then add them or simplify the two equations
    -3x-3y=-6
    ==>-6x-6y=-12
    +x+6y=-8
    __________
    -5x=-20
    Divide both sides by -5
    x=4 (Ans-1)
    Substituting value of x in Ans-1 in the second equation.
    4+6y=-8
    Now, you will get after simplifying it as
    y=(-8-4)/6=-2
    Thus, y=-2 (Ans-2)
    Check both the answers with the given equation, both sides of each equation must satisfy.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #15

    Jun 23, 2011, 10:00 AM

    pinkey1995, what I'm telling you, is to post at one time only when possible and not many times in a row.


    ~~~~~~~~~~~~~~~~
    Pratik_Pradhan DON'T answer a thread where the solution was already solved, unless you are bringing a new faster/simpler method to solve the question.

    Also, read the previous posts and check the date the question was asked. Don't answer old threads and be sure that the question is still on going.

    Thank you for reading this and considering it :)
    pinkey1995's Avatar
    pinkey1995 Posts: 12, Reputation: 1
    New Member
    		  
    #16

    Jun 23, 2011, 07:25 PM
    Comment on Pratik_Pradhan's post
    Thanks so much!
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Converting forced hot air system to baseboard heating system [ 2 Answers ]

Hi, I have a basic question about heating. Is it possible to change a forced hot air system to a baseboard heating system? And if so, what does it involve exactly? And approximate prices, for about 5000 sq feet house. Thank you very much.

97 honda passport fuel system too lean mass bad air flow system [ 1 Answers ]

I have a 1997 Honda Passport with the 3.2 V6 which I am trying to fix. The OBD2 is saying the fuel trim system too lean (cylinder bank 1 code # P0171) and the mass air flow system performance problem code#P0101. I am not sure what it is that is wrong. Can someone tell me where to start?

Converting forced hot air system to baseboard heating system [ 1 Answers ]

When considering converting from forced hot air to baseboard heat, is it possible to just add piping / water boiler / baseboards and do nothing with the forced hot air system (use it for AC) ?

Solving system of equations [ 3 Answers ]

Need help with solving this system of equations. x^2 + y^2= 0.5xyz y^2 + z^2= 0.5xyz x^2 + z^2= 0.5xyz I can solve with three variables but I have never ran into a question where the equation was equal to a product of each of the variable so I do not know where to start. If I have a...

How do I increase H2O pressure on well system with a water filtration system? [ 2 Answers ]

Howdy, I would like to know how I can increase my water pressure. My current system uses a well pump with a small pressure tank, and "D" control valve. It then runs through a WATERSOFT filtration tank, RAINSOFT water softner, and on the Hot water side, an AQUASTAR on demand hot water system. I...

View more questions Search