\frac{1}{9} \\ \\ \frac{10}{1}* \frac{1}{9}= \frac{10}{9}=1 \frac{1}{9} \\ \\ \frac{1}{9}-1 \frac{1}{9}= \frac{1}{9}- \frac{10}{9}= \frac{1-10}{9}=- \frac{9}{9}=-1 " alt="3*( \frac{1}{3})^{3}-10* \frac{1}{9} \\ \\ \frac{3}{1} * \frac{1}{27}= \frac{3}{27}=
\frac{1}{9} \\ \\ \frac{10}{1}* \frac{1}{9}= \frac{10}{9}=1 \frac{1}{9} \\ \\ \frac{1}{9}-1 \frac{1}{9}= \frac{1}{9}- \frac{10}{9}= \frac{1-10}{9}=- \frac{9}{9}=-1 " align="absmiddle" class="latex-formula">