(i) 1 by \(\frac{1}{2}\)
= \(\frac{1}{\frac{1}{2}}\)
= \(1\times \frac{1}{2}\)
= 2
(ii) 5 by \(\frac{-5}{7}\)
= \(5 \div \frac{-5}{7}\)
= \(\frac{5}{-5}\times 7\)
= -7
(iii) \(\frac{-3}{4}\) by \(\frac{9}{-16}\)
= \(\frac{3}{4} \div \frac{9}{16}\)
= \(\frac{3}{4}\times \frac{16}{9}\)
= \(\frac{4}{3}\)
(iv) \(\frac{-7}{8}\) by \(\frac{21}{-16}\)
= \(\frac{-7}{8} \div \frac{21}{16}\)
= \(\frac{-7}{8}\times \frac{16}{21}\)
= \(\frac{2}{3}\)
(v) \(\frac{7}{-4}\) by \(\frac{63}{864}\)
= \(\frac{7}{-4} \div \frac{63}{64}\)
= \(\frac{-7}{4}\times \frac{64}{63}\)
= \(\frac{-16}{9}\)
(vi) 0 by \(\frac{-7}{5}\)
= \(0 \div \frac{-7}{5}\)
= \(0\times \frac{-5}{7}\)
= 0
(vii) \(\frac{-3}{4}\) by -6
= \(\frac{3}{4} \div -6\)
= \(\frac{-3}{4}\times \frac{-1}{6}\)
= \(\frac{1}{8}\)
(viii) \(\frac{2}{3}\) by \(\frac{-7}{12}\)
= \(\frac{2}{3} \div \frac{-7}{12}\)
= \(\frac{2}{3}\times \frac{12}{-7}\)
= \(\frac{-24}{21}\)
= \(\frac{-8}{7}\)
(ix) -4 by \(\frac{-3}{5}\)
= \(-4 \div \frac{-3}{5}\)
= \(-4\times \frac{-5}{3}\)
= \(\frac{20}{3}\)
(x) \(\frac{-3}{13}\) by \(\frac{-4}{65}\)
= \(\frac{-3}{13} \div \frac{-4}{65}\)
= \(\frac{-3}{13}\times \frac{65}{-4}\)
= \(\frac{15}{4}\)
