Financial Audit of Variable Cost Expressions

Standard Operating Procedure for Opposite Denominators

When adding the rational expressions $\frac{4u - 1}{3u - 1}$ and $\frac{u}{1 - 3u}$, what is the mathematical relationship between the two denominators, $3u - 1$ and $1 - 3u$?

When adding $\frac{4u - 1}{3u - 1} + \frac{u}{1 - 3u}$, we rewrite the second fraction to have the common denominator $3u - 1$. What is the new numerator of the second fraction?

Match each expression with its description when adding $\frac{4u - 1}{3u - 1} + \frac{u}{1 - 3u}$.

Add the rational expressions and simplify: $\frac{4u-1}{3u-1} + \frac{u}{1-3u} =$ _____

Order the steps to add: $\frac{4u - 1}{3u - 1} + \frac{u}{1 - 3u}$

What is the numerator of $\frac{4u - 1}{3u - 1} + \frac{u}{1 - 3u}$ when written over the common denominator $3u - 1$?

When adding $\frac{4u-1}{3u-1} + \frac{u}{1-3u}$, how are the denominators related? What number do you multiply the second fraction by to get a common denominator?

Multiplying the numerator and denominator of $\frac{u}{1-3u}$ by $-1$ creates a common denominator with $\frac{4u-1}{3u-1}$.