16(!). Several numbers are written in a row. The first one is equal to \(a\), and the last one is equal to \(b\). In the second row, the differences between the second and the first, the third and the second, ..., the last and the penultimate members of the finite sequence are written. Find the sum of all these differences.
16. \(b-a\). Hint. It is useful to first consider a few particular cases.



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