Question

Hãy chứng tỏ các phân số sau bằng nhau : 13/33 và 143/363

1212/2727 và 12/27

Answer 1

 \(\dfrac{143}{363}\) = \(\dfrac{143:11}{363:11}\) = \(\dfrac{13}{33}\) (đpcm)

\(\dfrac{1212}{2727}\) = \(\dfrac{1212:101}{2727:101}\) = \(\dfrac{12}{27}\) (đpcm)

Answer 2

\(\dfrac{13}{33}\)  và \(\dfrac{143}{363}\)

\(\dfrac{13}{33}=\dfrac{13\times11}{33\times11}=\dfrac{143}{363}\)

\(\dfrac{143}{363}=\dfrac{143\times1}{363\times1}=\dfrac{143}{363}\)

\(\dfrac{1212}{2727}\)  và \(\dfrac{12}{27}\)

\(\dfrac{12}{27}=\dfrac{12\times101}{27\times101}=\dfrac{1212}{2727}\)

\(\dfrac{1212}{2727}=\dfrac{1212\times1}{2727\times1}=\dfrac{1212}{2727}\)

Answer 3

đó là toán mà