Question

Sa se efectueze: a) - 7 supra 18 : (- 14 supra 20) =

Answer 1

Răspuns:

-7/18÷(-14/20)=

7/18×20/14=

(140/252)⁽²⁸

5/9

Answer 2

Răspuns: $\bf\red{\boxed{\bf \dfrac{5}{9} }}$

Explicație pas cu pas:

$\bf -\dfrac{7}{18}:\bigg( -\dfrac{14}{20}\bigg)= \dfrac{7}{18}:\dfrac{14}{20}=\dfrac{\not7}{\not18}\cdot\dfrac{\not20}{\not14}=$

$\bf \dfrac{1}{9}\cdot\dfrac{10^{(2}}{2}= \dfrac{1}{9}\cdot\dfrac{5}{1}=\red{\boxed{\bf \dfrac{5}{9} }}$