Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: Please find the value Y in this given equation?

  1. #1
    Join Date
    Jan 2013
    Beans
    2

    Please find the value Y in this given equation?

    Hello!

    Could I ask you a big favor?
    I need help .
    I have :
    2x + [24-2 (y)] = 20
    I tried to use Equation Solver here:
    http://www.numberempire.com/equation...var=y&answers=

    And I've got: y = x+2
    It's the right answer, textbook shows me the same.
    But I want to understand the way to solve it.
    Please give me step by step explanation.

    Thanks in advance!

  2. #2
    Join Date
    Jun 2007
    Location
    Porirua, New Zealand
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: Please find the value Y in this given equation?

    Is this homework?

    You might want to have a look here, which has a tool to solve equations, and which tells you about the steps it takes.
    Forum DOs and DON'Ts
    Never assume that information you find using a search engine is up-to-date.

  3. #3
    Join Date
    Jun 2007
    Location
    Porirua, New Zealand
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: Please find the value Y in this given equation?

    From the forum code of conduct:
    While we are happy to serve as a resource for hints and for asking questions when you get stuck and need a little help, the Ubuntu Forums is not a homework service. Please do not post your homework assignments expecting someone else to do it for you. Any such threads will be taken offline and warnings or infractions may be issued.
    Forum DOs and DON'Ts
    Never assume that information you find using a search engine is up-to-date.

  4. #4
    Join Date
    Feb 2007
    Location
    Romania
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Please find the value Y in this given equation?

    Hi, mathstudent170,

    Welcome to the forums!


    Quote Originally Posted by mathstudent170 View Post
    But I want to understand the way to solve it.
    (1) Read the section of your textbook about Linear equations in two variables or any other source about the same subject.

    (2) Read it again

    (3) Do step (1)

  5. #5
    Join Date
    Jul 2008
    Location
    The Left Coast of the USA
    Beans
    Hidden!
    Distro
    Kubuntu

    Re: Please find the value Y in this given equation?

    What do you want it to be?

  6. #6
    Join Date
    Aug 2005
    Beans
    6,012

    Re: Please find the value Y in this given equation?

    2x + [24-2 (y)] = 20

    2x + 24 -2y = 20

    2x -2y = -4

    x - y = -2

    -y = -2 - x

    y = 2 + x

    Now sustitude the above answer into the y of the original equation to determine the value for x, once you have the value for x put it into the original equation for x and then determine y.

  7. #7
    Join Date
    Oct 2005
    Location
    Linköping, Sweden
    Beans
    35
    Distro
    Ubuntu 12.10 Quantal Quetzal

    Re: Please find the value Y in this given equation?

    What does the square brackets mean?

    Björn

  8. #8
    Join Date
    Feb 2007
    Location
    Romania
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Please find the value Y in this given equation?

    Quote Originally Posted by Björn View Post
    What does the square brackets mean?

    Björn
    In this case, they mean the same as the parentheses (round brackets). Square and curly brackets are often used in place of a second and third set of parentheses when they are nested, to provide a visual distinction.

    {[1 + (x^2+2x+3)(x+2)]/[x + (3x^2+3x+1)(2x-1)]}/3=0
    is the same as
    ((1 + (x^2+2x+3)(x+2))/(x + (3x^2+3x+1)(2x-1)))/3=0

    In handwriting, I usually just use bigger parentheses.
    Last edited by sisco311; January 6th, 2013 at 01:23 PM.

  9. #9
    Join Date
    Aug 2005
    Beans
    6,012

    Re: Please find the value Y in this given equation?

    Quote Originally Posted by Björn View Post
    What does the square brackets mean?

    Björn
    Here they actually serve no purpose as far as I can tell as the oprerations remain the same with or without them.

  10. #10
    Join Date
    Nov 2010
    Location
    Spain
    Beans
    Hidden!
    Distro
    Xubuntu

    Re: Please find the value Y in this given equation?

    This is an ubuntu forum. You should try yahoo answers (for example), and post your question in science and mathematics -> mathematics.
    One vision, one purpose.

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •