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

    Apr 1, 2009, 04:59 PM
    In the following systems, which terms are opposites? Explain how you would solve each
    x+7y=13
    x-7y=5
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
    Ultra Member
    		  
    #2

    Apr 2, 2009, 06:18 AM
    To solve, just use substitution.

    Solve one equation for y or x and sub into the other.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #3

    Apr 3, 2009, 11:26 PM

    You can also eliminate either x or y like this;

    x+7y=13
    x-7y=5

    (x+x) + (7y + -7y) = (13+5)

    then,

    2x + 0y = 18

    Can you continue?

    OR

    (x-x) + (7y - -7y) = (13-5)

    0x + 14y = 8

    Here also, can you continue?
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

Solve the linear systems by graphing [ 1 Answers ]

y=3x+7

Can anyone explain AMT in layman terms? Thanks [ 2 Answers ]

Can anyone explain the advantages-disadvantages and who is most likely to be hit with AMT and who is not, etc. Thanks

Do opposites attract or repel? [ 5 Answers ]

I have liked this guy at my work for a few months now and only got the courage to let him know when I left (a month ago) I sent him an email to say that I would like to keep in touch with him and he replied totally ignoring that part but asking me how I was and that "they" missed me at work. ...

Opposites attract [ 12 Answers ]

Can anyone help me... Why would a guy who is completely the opposite of me like me... alot! He is into weed, smoking and can come across quite cocky (despite the fact he is usually jokin, its just the way he is) Whereas I am sort of a geek, college work comes first, hate drugs and smoking,...

Solve in terms of n [ 6 Answers ]

Hi All, I have this equation. f=c((1+r)^n + \frac{(1+r)^{n+1}-(1+r)}{r}) I'm trying to solve in terms of n (i.e. making n the subject of the formula. Does anyone have any idea how this can be done? Thanks a lot.

View more questions Search