Question

5 supra 4 ori 6 supra 7 împărțit la 5 supra 21

Answer 1

$\it \dfrac{5}{4}\cdot\dfrac{6}{7}:\dfrac{5}{21}=\dfrac{\not30\ ^6}{\not28\ _4}\cdot\dfrac{\not21\ ^3}{\not5}=\dfrac{\ 18^{(2}}{4}=\dfrac{9}{2}=4,5$

Answer 2

Explicație pas cu pas:

$\frac{5}{ \not4_{2}} \cdot \frac{ \not6 ^{3} }{7} : \frac{5}{21} = \frac{ \not5 \cdot 3}{2 \cdot \not7} \cdot \frac{ \not21 ^{3} }{ \not5} = \frac{9}{2} = 4\frac{1}{2}$