The multiplicative inverse of -1 1/7 is
(a) 8/7
(b) -8/7
(c) 7/8
(d) -7/8

Solution:

Given number -1 1/7

Firstly, this is an improper fraction, so we need to convert it into a proper fraction.

-1 1/7 = -8/7

Multiplicative inverse of a rational number is which when multiplied with a rational number gives result 1.

Let the number be x

(-8/7) × (x) = 1

x = -7/8

Therefore, the multiplicative inverse of-1 1/7 is -7/8.

✦ Try This: The multiplicative inverse of -3 is _____.

Let the number be x

(-3) × (x) = 1

x = -1/3

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

NCERT Exemplar Class 8 Maths Chapter 1 Problem 14

The multiplicative inverse of -1 1/7 is (a) 8/7, (b) -8/7, (c) 7/8, (d) -7/8

Summary:

The multiplicative inverse of -1 1/7 is -7/8

☛ Related Questions:

• If x be any rational number then x + 0 is equal to (a) x, (b) 0, (c) - x, (d) Not defined
• The reciprocal of 1 is (a) 1, (b) -1, (c) 0, (d) Not defined
• The reciprocal of -1 is (a) 1, (b) -1, (c) 0, (d) Not defined