a) The additive identity in rational numbers is ......
\( \boxed{0} \)
b) The multiplicative inverse of \( \frac{5}{8} \) is ......
\( \boxed{\frac{8}{5}} \)
c) The multiplicative inverse of \( -\frac{7}{3} \) is ......
\( \boxed{-\frac{3}{7}} \)
d) The multiplicative inverse of \( -9 \) is ......
\( \boxed{-\frac{1}{9}} \)
e) The multiplicative inverse of \( 2\frac{2}{3} \) is ......
\( \boxed{\frac{3}{8}} \)
f) The multiplicative inverse of \( 0.25 \) is ......
\( \boxed{4} \)
g) The multiplicative inverse of \( -1 \) is ......
\( \boxed{-1} \)
h) The multiplicative inverse of \( \left| -\frac{4}{7} \right| \) is ......
\( \boxed{\frac{7}{4}} \)
i) The rational number \( \frac{b+2}{3} \) has a multiplicative inverse if \( b \neq \) ......
\( \boxed{-2} \)
MR/Nasef.N
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