Question

find the multiplicative inverse of - 13​

Answer 1

please mark my answer as brainleast

Here, 1⁄7 is called the multiplicative inverse of 7. Similarly, the multiplicative inverse of 13 is 1⁄13.

Answer 2

The multiplicative inverse of - 13 is - 1/13

Given :

The number - 13

To find :

The multiplicative inverse of - 13

Solution :

Step 1 of 2 :

Define multiplicative inverse of a number

1 is the Multiplicative identity

Let M ( ≠ 0 ) is the multiplicative inverse of N

Then M × N = 1 = N × M

⇒ M = 1/N

So 1/N is multiplicative inverse of N

Step 2 of 2 :

Find multiplicative inverse of - 13

Let N be the multiplicative inverse of - 13

$\displaystyle \sf{ N \times (- 13) = 1 }$

$\displaystyle \sf{ \implies N = 1 \times \frac{1}{-13} }$

$\displaystyle \sf{ \implies N = - \frac{1}{13} }$

The multiplicative inverse of - 13 is - 1/13

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