Question

5. Verify: - (-x) = X when : a) x = 3/5 b) x = -7/9​

Answer 1

Step-by-step explanation:

Given:-

a) x = 3/5

b) x = -7/9

To find:-

Verify: - (-x) = X for the following :

a) x = 3/5

b) x = -7/9

Solution:-

a) Given that x = 3/5

-x = -3/5

-(-x)

=-(-3/5)

= 3/5

-(-x)=x

-(-x) = x is true for x = 3/5

b) Given that x = -7/9

-x

= -(-7/9)

-x =7/9

-(-x)

=-(7/9)

-(-x) =-7/9

x=-(-x) is true for x = -7/9

Answer:-

Verified the given relation x = -(-x) for the given values of x.

Used formula:-

• Product of two negative numbers is also a positive number.
• Product of a positive number and a negative number is always a negative number.