Question

d.
. va roggggg mult !!!​

Answer 1

Răspuns:

$-\frac{5}{3}$

Explicație pas cu pas:

$-1+(-\frac{2}{9})+(+\frac{5}{36} )+(-\frac{7}{12})=$

$-1 -\frac{2}{9} + \frac{5}{36} - \frac{7}{12} =$

amplificam -1 cu 36, 2/9 cu 4 si 7/12 cu 3

$-\frac{36}{36} -\frac{8}{36} + \frac{5}{36} - \frac{21}{36} =$

$\frac{-36-8+5-21}{36} =$

$\frac{-60}{36} =$

$-\frac{60}{36} =$

simplificam 60 cu 36

$-\frac{5}{3}$