Răspuns:
[tex] \frac{1}{4} = o \: patrime \: = un \: sfert[/tex]
[tex] \frac{1}{2} = o \: jumatate[/tex]
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[tex] \frac{1}{4} + \frac{1}{4} + \frac{1}{2} = \\ \\ = \frac{1 + 1}{4} + \frac{1}{2} = \\ \\ = \frac{2}{4} {}^{(2} + \frac{1}{2} = \\ \\ = \frac{1}{2} + \frac{1}{2} = \\ \\ = \frac{1 + 1}{2} = \\ \\ = \frac{2}{2} = \\ \\ = 1[/tex]
