\(a)\;\;6,5\; = \frac{{65}}{{10}} = \frac{{13}}{2}\)
b)\( - 1,28 = \frac{{ - 128}}{{100}} = \frac{{ - 32}}{{25}}\)
c)\(-0,124 = \frac{{-124}}{{1000}} = \frac{{-31}}{{250}}\)
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