It's often necessary to take a somewhat complicatedlooking fraction,
like (say) $\,\frac{5x}{3}\,$, and rename it.
One popular name is the form $\,kx\,$:
i.e., a number first, and the variable $\,x\,$ last.
In general, it is efficient to make two ‘passes’ through the expression:
figure out the sign (plus or minus) on the first pass,
and the size on the second pass:
$$
\cssId{s10}{\frac{5x}{3}}\ \
\cssId{s11}{\overset{\text{first pass, determine plus/minus sign:}}{
\overset{\text{even # of negative factors, so positive}}{\overbrace{\strut\ \ \ =\ \ \ }}}}
\cssId{s12}{\ \ \frac{5x}{3}\ \ }
\cssId{s13}{\overset{\text{‘peel off’ the coefficient}}{
\overset{\text{and write it in front}}{\overbrace{\strut\ \ \ =\ \ \ }}}}
\ \
\cssId{s14}{ \underset{k}{\underbrace{\ \frac53\ }} x}
$$
This exercise gives you practice with this type of renaming.
CONCEPT QUESTIONS EXERCISE:
On this exercise, you will not key in your answer.However, you can check to see if your answer is correct. 
PROBLEM TYPES:
