Răspuns :
Răspuns:
1/2=2/4=1/2
5/7=25/47
a/b=a la put 2 /b la put 2
2x/5y=4x la put 2/25x la put 2
[tex]\it \dfrac{^{3)}a}{\ \ b}=\dfrac{3\cdot a}{3\cdot b}\\ \\ \\ \dfrac{^{3)}5}{\ \ 7}=\dfrac{3\cdot 5}{3\cdot 7}=\dfrac{15}{21}[/tex]
Răspuns:
1/2=2/4=1/2
5/7=25/47
a/b=a la put 2 /b la put 2
2x/5y=4x la put 2/25x la put 2
[tex]\it \dfrac{^{3)}a}{\ \ b}=\dfrac{3\cdot a}{3\cdot b}\\ \\ \\ \dfrac{^{3)}5}{\ \ 7}=\dfrac{3\cdot 5}{3\cdot 7}=\dfrac{15}{21}[/tex]