Q. 1045.0( 2 Votes )

# Find the multiplicative inverse of (–7)–2 ÷ (90)–1.

Remember, a is called multiplicative inverse of b, if a × b = 1.

(–7)–2 ÷ (90)–1 =

=

=

(-a)m = am , if m is an even number and (-a)m =

Put b = in a × b = 1

a × = 1

The multiplicative inverse of (–7)–2 ÷ (90)–1 is

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