Question

Verify that -(-x) = x,+ when x = (a) 7\6 (b) -8\9​

Answer 1

Question ➡

Verify that -(-x) = x , when x = (a) 7\6 (b) -8\9

Answer ➡

$(a) \frac{7}{6} \\ \\ - ( - \frac{7}{6} ) = \frac{7}{6} \\ \\ ( - \times - = + ) \\ \\ \frac{7}{6} = \frac{7}{6} \\ \\ Hence \: proved$

$(b) \frac{ - 8}{9} \\ \\ - ( - ( - \frac{8}{9}) = \frac{8}{9} \\ \\ - \frac{8}{9} = \frac{8}{9} \\ \\ LHS \: is \: not \: equal \: to \: RHS \\ \\ Hence \: - ( - x) = x \: isnt \: applicable$

Answer 2

Answer:

-8/9

-(-x)=x

-(-(-8/9)=-8/9

-8/9=-8/9

LHS is equal to RHS

Hence verified