(i) The reciprocal of 9 is 1/9
(ii) The reciprocal of -7 is -1/7
(iii) The reciprocal of 12/5 is 5/12
(iv) The reciprocal of -7/9 is 9/-7
(v) The reciprocal of -3/-5 is 5/3
(vi) The reciprocal of 2/3 × 9/4 is
\(\frac{2}{3}\times\frac{9}{4}\\=\frac{18}{12}\\=\frac{3}{2}\)
Hence ,the reciprocal is 2/3
(vii) The reciprocal of -5/8 × 16/15 is
\(\frac{-5}{8}\times\frac{16}{15}\\=\frac{-80}{120}\\=\frac{-2}{3}\)
Hence The reciprocal of -2/3 is 3/-2
(viii) The reciprocal of \(-2\times\frac{-3}{5}\) is
\(= \frac{6}{5}\)
∴ Hence ,The reciprocal of 6/5 is 5/6
(ix) The reciprocal of -1 is -1
(x) The reciprocal of 0/3 does not exist
(xi) The reciprocal of 1 is 1
