Question

scrieti fractii a supra b echivalente cu 4 supra 9 unde b este numar natural cuprins intre 20 si 50
Va rogg dau coroana

Answer 1

$\it \dfrac{^{3)}4}{\ 9} = \dfrac{12}{27};\ \ \ \ \dfrac{^{4)}4}{\ 9} = \dfrac{16}{36};\ \ \ \ \dfrac{^{5)}4}{\ 9} = \dfrac{20}{45}$

Answer 2

daca 20<b<50
inseamna ca , amplificarea trebuie sa fie 20< b={3*9 ; 4*9; 5*9}<50
deci:
$\frac{^{3)}4}{9)=\frac{12}{27};\\ \frec{^{4)}4}{9}=\frac{16}{36}\\ \frac{^{5)}4}{9}=\frac{20}{45}$