Question

8 a, va rog, dau 20 puncte si coronita

Answer 1

$2 \frac{1}{2} - ( + \frac{5}{4}) - 1.(5) = \frac{5}{2} - \frac{5}{4} - \frac{14}{9} = \frac{5}{4} - \frac{14}{9} = \frac{45 - 56}{36} = \frac{ - 9}{36} = - \frac{1}{4}$
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