Question

2. Find the Multiplicative inverse of:
(a) (-17/23
(b) (41-67)
(c) (-51/-43)​

Answer 1

$(a) \frac{ - 17}{23}$

$= \frac{ - 17}{23} \times \frac{23}{ - 17}$

$= \frac{ - 391}{ - 391}$

$= \: 1$

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$(b) \: \frac{41}{67}$

$= \frac{41}{67} \times \frac{67}{41}$

$= \frac{2745}{2745}$

$= 1$

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$(c) \frac{ - 51}{ - 43}$

$= \frac{ - 51}{ -43 } \times \frac{ - 43}{ - 51}$

$= \frac{2193}{2193}$

$= 1$

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