Question

Efectuați calculele a minus 5 supra 12 plus 1 supra 6 ori 3 întregi 1 supra 2 b minus 1 supra 18 plus 1 supra 12 totul ori minus 5 supra 6 ​

Answer 1

Răspuns:

Explicație pas cu pas:

a = -5/12 + 1/6 · 3 1/2

a = -5/12 + 1/6 · 7/2 = -5/12 + 7/12 =>

a = (-5+7)/12  = 2/12 = > a = 1/6

b = (²⁾-1/18 +³⁾1/12)·(-5/6)

b = [(-2+3)/36]·(-5/6) = 1/36 ·(-5/6) =>

b = -5/216

#copaceibrainly

Answer 2

a)

$\it -\dfrac{5}{12}+\dfrac{1}{6}\cdot(3\dfrac{1}{2})=-\dfrac{5}{12}+\dfrac{1}{6}\cdot\dfrac{7}{2}=-\dfrac{5}{12}+\dfrac{7}{12}=\dfrac{-5+7}{12}=\dfrac{\ 2^{(2}}{12}=\dfrac{1}{6}$