Evaluate
-\frac{57}{8}=-7.125
Factor
-\frac{57}{8} = -7\frac{1}{8} = -7.125
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\frac{7}{8}-\frac{64}{8}
Convert 8 to fraction \frac{64}{8}.
\frac{7-64}{8}
Since \frac{7}{8} and \frac{64}{8} have the same denominator, subtract them by subtracting their numerators.
-\frac{57}{8}
Subtract 64 from 7 to get -57.
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