Verify that −(−x) = x for (i) x = 1115 (ii) x = −1;317

Given identity −(−x) = x
(i) For x = 1115
Consider, L.H.S: −(−x) = −(−1;115) = 1115 (Since, −(−a) = a)
= x = R.H.S
Thus, −(−x) = x verifies for x = 1115
(ii) For x = −1;317
Consider, L.H.S: −(−x) = −(−1;317) = 1317 (Since, −(−a) = a)
= x = R.H.S
Thus, −(−x) = x verifies for x = −1;317