Posted by **Ashley** on Saturday, July 30, 2011 at 7:02pm.

I was looking on a website that teaches linear algebra and it had this problem:

3x - 15

_______ =0

2x + 1

And it says the answer is: x = 5

But I don't understand how to get that answer so I hope someone can give me step by step directions for it.

- Math / Linear Equations -
**MathMate**, Saturday, July 30, 2011 at 7:33pm
As long as x≠-1/2, the denominator is not zero. In that case, the only way for the expression to be zero is when the numerator becomes zero, or

3x-15=0, which gives x=5 as the root.

In the case when x=-1/2, the expression becomes undefined, and no solution is possible.

## Answer This Question

## Related Questions

- math - I'm trying to follow a research paper The paper shows an equation to ...
- math and desperate - What similarities and differences are there between ...
- Algebra - Determine if the relationship represented in the table is linear. If ...
- Algebra - solving linear equations w/ substitution - The question in the book ...
- Algebra - What similarities and differences are there between functions and ...
- algebra - What are the similarities and differences between functions and linear...
- MAT101 - Why is it important to understand linear equations in business? What ...
- math-linear equations - Its a story problem: The flying W Ranch raises only cows...
- Algebra - What similarities and differences do you see between functions and ...
- Algebra 1 - I need some help with Direct linear variation. I had tooken a test, ...

More Related Questions