1.

Verify [-(-x)]= x for the x=11/5

Answer»

If \: x = \frac{11}{5}

LHS = [-(-x)] \\= [ - \Big(- \frac{11}{5} \Big)]\\= \frac{11}{5} \\= x \\ = RHS

THEREFORE ,

\red { [-(-x)] }\green {= x }

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