91Ó°ÊÓ

$$ -\frac{9}{12}+\frac{17}{24}-\frac{1}{6} $$

Perform each indicated operation. $$ \begin{array}{r} 15 \frac{1}{5} \\ 20 \frac{3}{10} \\ +37 \frac{2}{15} \\ \hline \end{array} $$

Calculate \(\left(\frac{1}{2}\right)^{2} \cdot\left(\frac{3}{4}\right)^{2}\) and \(\left(\frac{1}{2} \cdot \frac{3}{4}\right)^{2} .\) Do both of these expressions simplify to the same number? Explain why or why not.

Solve. If no equation is given, perform the indicated operation. $$ -\frac{7}{9} x=-\frac{5}{18}-\frac{4}{18} $$

Perform each indicated operation. $$ \begin{array}{r} 3 \frac{7}{16} \\ 6 \frac{1}{2} \\ +9 \frac{3}{8} \\ \hline \end{array} $$

Find the \(L C D\) of each list of fractions. $$ \frac{45}{24}, \frac{2}{45} $$

Perform each indicated operation. See Examples 1 through 15. $$ \frac{17 y^{2}}{24 x} \div \frac{13 y}{18 x} $$

Determine whether each pair of fractions is equivalent. \(\frac{6}{21}\) and \(\frac{14}{35}\)

$$ -\frac{5}{14}+\frac{3}{7}-\frac{1}{2} $$

Perform each indicated operation. See Examples 1 through 15. $$ \left(1 \div \frac{3}{4}\right) \cdot \frac{2}{3} $$