Question

paranteza rotunda 1+3pe2ori5pe2inchide paranteza :6-1

Answer 1

(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

Answer 2

(1$( \frac{1+3}{2} * \frac{5}{2} ): 6-1$ =
$( \frac{2}{2} * \frac{5}{2} ): 6 - 1$ =
$\frac{10}{4} * \frac{1}{6} - 1$ =
$\frac{10}{24} - 1$ =
$\frac{5}{12} - 1$ =
$\frac{15}{12} - \frac{12}{12}$ =
$\frac{3}{12}$ =
$\frac{1}{4}$ sau $0,25$