Question

Amplificati cu 3 urmatoarele fracții 1supra 2 5 supra 7 a sura b 2x supra 5y

Answer 1

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

Answer 2

$\it \dfrac{^{3)}a}{\ \ b}=\dfrac{3\cdot a}{3\cdot b}\\ \\ \\ \dfrac{^{3)}5}{\ \ 7}=\dfrac{3\cdot 5}{3\cdot 7}=\dfrac{15}{21}$