Consecutive is remember-able (Part 8)

Algebra Level 2

Evaluate:

\[ \large{1-2+3-4+5-\ldots-1456+1457-1458} \]

Details:

The addition and subtraction are in a consecutive order of \( 1458 \) numbers: \( 1, 2, 3,\ldots, 1457, 1458 \)

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