Can you find a rational number whose multiplicative inverse is -1?

Solution:

Multiplicative inverse means when multiplied by the given number gives result as 1

Let the required number be x

x × -1 = 1

x = -1

Therefore the required number is -1.

✦ Try This: Can you find a rational number whose multiplicative inverse is -1/3?

Multiplicative inverse means when multiplied by the given number gives result as 1

Let the required number be x

x × -1/3 = 1

x = -3

Therefore the required number is -3.

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 1

NCERT Exemplar Class 8 Maths Chapter 1 Problem 131

Summary:

A rational number whose multiplicative inverse is -1 is -1

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