# How do you solve rational equations #6 + 1/(u-1) = 6 / (u+1)#?

##### 1 Answer

Feb 14, 2016

You must put on equivalent denominators.

#### Explanation:

The LCD (Least Common Denominator) is

We can now eliminate denominators, since all fractions are equivalent.

Solve by factoring:

However, we cannot except -1 as a solution because it is a non permissible value. Non-permissible values are numbers that can't be used in the denominators because they make the denominators equal to 0, and division by 0 is non defined. So, the solution is

Hopefully this helps!