Question

find the multiplicative inverse of -11 by -15​

Answer 1

Answer:

we know that

• ( - ) × ( - ) = ( + )

so

• ( -11 ) × ( 15 )
• 165

SO YOUR ANSWER IS 165

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Answer 2

The multiplicative inverse of - 11/- 15 is 15/11

Given :

The number - 11/- 15

To find :

The multiplicative inverse of - 11/- 15

Solution :

Step 1 of 2 :

Define multiplicative inverse of a number

1 is the Multiplicative identity

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

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 - 11/- 15

Let N be the multiplicative inverse of - 11/- 15

$\displaystyle \sf{ N \times \frac{-11}{-15} = 1 }$

$\displaystyle \sf{ \implies N \times \frac{11}{15} = 1}$

$\displaystyle \sf{ \implies N = \frac{1}{\frac{11}{15}} }$

$\displaystyle \sf{ \implies N = 1 \times \frac{15}{11} }$

$\displaystyle \sf{ \implies N = \frac{15}{11} }$

The multiplicative inverse of - 11/- 15 is 15/11

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