Saturday
March 25, 2017

Post a New Question

Posted by on .

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 - ,

    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

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question