1. First Cup of Ubuntu
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Jan 2013
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## 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:

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.

2. ## 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.

3. ## 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.

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

Hi, mathstudent170,

Welcome to the forums!

Originally Posted by mathstudent170
But I want to understand the way to solve it.

(3) Do step (1)

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

What do you want it to be?

6. ## 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.

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

What does the square brackets mean?

Björn

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

Originally Posted by Björn
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. ## Re: Please find the value Y in this given equation?

Originally Posted by Björn
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. ## 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.

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