Răspuns :
7 / 8 + 1 / 2 - 3 / 4 =
= 7 / 8 + 4 / 8 - 6 / 8
= 11 / 8 - 6 / 8
= 5 / 8
= 7 / 8 + 4 / 8 - 6 / 8
= 11 / 8 - 6 / 8
= 5 / 8
[tex] \frac{7}{8} + \frac{1}{2} - \frac{3}{4} = \frac{7 + 4 - 6}{8}= \frac{5}{8} [/tex]