| http://www.w3.org/ns/prov#value | - Below are a couple of ways to compute $\rm\: 17^{-1}\pmod{29}.\ $ First, twiddling fractions $$\rm mod\ 29\!:\ \ \ {{\ \ \, 1\,\equiv\ \ \ 30}\atop{17\,\equiv\, -12}}\ \ \ \Rightarrow\ \ \ \frac{1}{17}\ \equiv\ \frac{\ 30\ }{-12\ }\ \equiv\ \frac{5}{-2\ }\,\equiv\,\frac{-5\,}2\,\equiv\,\frac{24}2\,\equiv\,12$$
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