Efectuați calculele

Răspuns:
Explicatie pas cu pas:
[tex] \frac{1}{2} + [ \frac{1}{4} + ( - \frac{1}{8} )]= \frac{1}{2} + ( \frac{1}{4} - \frac{1}{8} ) = [/tex]
[tex] \frac{1}{2} + \frac{1}{8} = \frac{4}{8} + \frac{1}{8} = \frac{5}{8} [/tex]