Răspuns :

Miky93id
(1+3/2 * 5/2):6 -1=

=(1+ 15/4) * 1/6 -1=  aducem la acelasi numitor  in paranteza

=(4+15)/4 * 1/6-1=

= 19/4 * 1/6 -1=

=19/24-1 =     aducem la acelasi numitor

(19-24)/24= -5/24
Oliviaaaid
(1[tex]( \frac{1+3}{2} * \frac{5}{2} ): 6-1[/tex] =
[tex]( \frac{2}{2} * \frac{5}{2} ): 6 - 1[/tex] =
[tex] \frac{10}{4} * \frac{1}{6} - 1[/tex] =
[tex] \frac{10}{24} - 1[/tex] =
[tex] \frac{5}{12} - 1[/tex] =
[tex] \frac{15}{12} - \frac{12}{12} [/tex] =
[tex] \frac{3}{12} [/tex] =
[tex] \frac{1}{4} [/tex] sau [tex]0,25[/tex] 

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