\(a,\dfrac{7}{15}=\dfrac{2}{15}+\dfrac{1}{3}\\ b,\dfrac{13}{27}=\dfrac{10}{27}+\dfrac{1}{9}\\ c,\dfrac{3}{18}=\dfrac{1}{18}+\dfrac{1}{9}\\ d,=\dfrac{1}{20}+\dfrac{1}{20}\)

Hi:D

5/27 và 8/27 

Tết nay mình được ít tiền lì xì nên các bạn ủng hộ cho mình lên 120 điểm nhé !

minh ? minh ? minh ?

bài này khó

345/10=34 và 1/2

\(\dfrac{345}{10}=34\dfrac{1}{2}\)

Vậy \(\dfrac{345}{10}=34\dfrac{1}{2}\)

a) 7 / 15 = 1 / 15 + 6 / 15

b) 13/27=11 / 27 + 2 / 27

c) 3 /18 = 1 / 9 + 1 / 18

bn lm dr^-^

10/27: 1/27+7/27+2/27

13/12: 1/12+7/12+5/12

15/8:7/8+3/8+5/8

10/27 = 1/27+2/27+7/27

13/12 = 1/12+5/12+7/12

15/8 =  3/8+5/8+7/8

ko biết nữa tui gà lắm

10/27 = 2/9 + 4/27

\(\dfrac{10}{27}\) = \(\dfrac{3+7}{27}\) = \(\dfrac{3}{27}\) +  \(\dfrac{7}{27}\) = \(\dfrac{1}{9}\) + \(\dfrac{7}{27}\)

\(\dfrac{10}{27}\) = \(\dfrac{1}{9}\) + \(\dfrac{7}{27}\)

\(\dfrac{10}{27}\) = \(\dfrac{6+4}{27}\) = \(\dfrac{6}{27}\) + \(\dfrac{4}{27}\) = \(\dfrac{2}{9}\) + \(\dfrac{4}{27}\)

\(\dfrac{10}{27}\) = \(\dfrac{9+1}{27}\) = \(\dfrac{9}{27}\) + \(\dfrac{1}{27}\) = \(\dfrac{1}{3}\) + \(\dfrac{1}{27}\)

\(\dfrac{10}{27}\) = \(\dfrac{1}{3}\) + \(\dfrac{1}{27}\)

a,7/12=1/4+1/3