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calculează (1/2-3/4)-(5/2-5/4)-(3/2-3/4)

Răspuns :

Diannatre
= 1/2 - 3/4 - 5/2 + 5/4 - 3/2 + 3/4
= 2/4 - 3/4 - 10/4 + 5/4 - 6/4 + 3/4
= - 9/4
Baftă
[tex] (\frac{1}{2} - \frac{3}{4}) - ( \frac{5}{2} - \frac{5}{4} ) - ( \frac{3}{2} - \frac{3}{4})= \\ \frac{-1-5}{4} - \frac{3}{4} = \\ \frac{-6}{4} - \frac{3}{4}= \frac{-6-3}{4} = \frac{-9}{4} = - \frac{9}{4} =-2 \frac{1}{4} [/tex]

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