Financial Audit of Variable Cost Expressions

Standard Operating Procedure for Opposite Denominators

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 $3u - 1$?

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

Rewrite $\frac{u}{1-3u}$ with denominator $3u-1$. What is the new numerator?

What number makes $1-3u$ equal to $3u-1$ when used as a multiplier?

How are the expressions $3u-1$ and $1-3u$ related?