Questions: Rational Expressions
Adding rational expressions with denominators ax-b and b-ax
Subtract.
6/(8x-3) - 4/(3-8x)
Simplify your answer as much as possible.
Transcript text: Rational Expressions
Adding rational expressions with denominators ax-b and b-ax
Subtract.
\[
\frac{6}{8 x-3}-\frac{4}{3-8 x}
\]
Simplify your answer as much as possible.
Solution
Solution Steps
To subtract these rational expressions, we first need to find a common denominator. Notice that the denominators \(8x - 3\) and \(3 - 8x\) are negatives of each other. Therefore, we can rewrite the second fraction to have the same denominator as the first by factoring out a negative sign. Once the denominators are the same, we can subtract the numerators and simplify the resulting expression.
Step 1: Identify the Rational Expressions
We start with the rational expressions:
\[
\frac{6}{8x - 3} - \frac{4}{3 - 8x}
\]
Step 2: Rewrite the Second Expression
Notice that \(3 - 8x\) can be rewritten as \(-(8x - 3)\). Thus, we can express the second fraction as:
\[
\frac{4}{3 - 8x} = -\frac{4}{8x - 3}
\]
Step 3: Find a Common Denominator
Now, we can rewrite the subtraction with a common denominator:
\[
\frac{6}{8x - 3} - \left(-\frac{4}{8x - 3}\right) = \frac{6 + 4}{8x - 3} = \frac{10}{8x - 3}
\]
Step 4: Simplify the Expression
The resulting expression is already in its simplest form:
\[
\frac{10}{8x - 3}
\]
Final Answer
The simplified result of the subtraction is:
\[
\boxed{\frac{10}{8x - 3}}
\]