Question

verify that -(-x) is the same as x for x = -31/21​

Answer 1

-(-(-31/21)

+(-31/21)

-31/21

Hence proved that -(-x) = x

Step-by-step explanation:

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Answer 2

x = -31 /21

-(-x) = -[-(- 31 / 21) ]

= -31 / 21

= x

ie,

x = -(-x)