Question

rút gọn phân số

\(\dfrac{-8}{12}\)

\(\dfrac{15}{-60}\)

\(\dfrac{-16}{-72}\)

\(\dfrac{35}{14.15}\)

Answer 1

\(\dfrac{-8}{12}=\dfrac{-8:4}{12:4}=\dfrac{-2}{3}\\ \dfrac{15}{-60}=\dfrac{15:15}{-60:15}=\dfrac{1}{-4}\\ \dfrac{-16}{-72}=\dfrac{-16:\left(-8\right)}{-72:\left(-8\right)}=\dfrac{2}{9}\\ \dfrac{35}{14.15}=\dfrac{5.7}{7.2.5.3}=\dfrac{1}{2.3}=\dfrac{1}{6}\)

Answer 2

-2/3

-1/4

2/9

1/6

Answer 3

-8/12= -2/3

15/-60= 1/-4

-16/-72= 2/9

35/14.15= 1/6

Answer 4

\(\dfrac{-2}{3}\)

\(\dfrac{1}{-4}\)= \(\dfrac{-1}{4}\)

\(\dfrac{2}{9}\)

\(\dfrac{1}{6}\)