Question

"Question 4 Find the multiplicative inverse of the following.

(i) -13
(ii) -13/9
(iii) 1/5
(iv) -5/8 x -3/7
(v) -1 x -2/5
(vi) −1

Rational Numbers Page 14"

Answer 1

(1)13^-1
(2)-9/13
(3)5
(4)56/15
(5)5/2
(6)-1
Hope it helps you ☺️

Answer 2

we know multiplicative inverse of x is 1/x such that x×1/x = 1

Now
i) Multiplicative inverse of -13 is -1/13

2) Multiplicative inverse of -13/9 is -9/13

3) Multiplicative inverse of 1/5 is 5

4) Multiplicative inverse of -5/8×-3/7 = 15/56 is 56/15

5) Multiplicative inverse of -1×-2/5 = 2/5 is 5/2

6) Multiplicative inverse of -1 is -1