## Elementary Algebra

(-$\frac{3}{8}$) $\times$ ($\frac{13}{14}$) $\times$ (-$\frac{12}{9}$) = $\frac{13}{28}$
(-$\frac{3}{8}$) $\times$ ($\frac{13}{14}$) $\times$ (-$\frac{12}{9}$) = Multiply the numerators by each other, and multiply the denominators by each other $\frac{(-3) \times 13 \times (-12)}{8\times14\times9}$ = Factor the numerator and the denominator $\frac{(-3) \times 13 \times (-2) \times 2 \times 3 }{2\times2\times2\times2\times7\times3\times3}$ = Cancel the common factors between the numerator and the denominator to obtain : $\frac{(-13)\times (-1)}{2\times2\times7}$ = $\frac{13}{2\times2\times7}$ = $\frac{13}{28}$