Question

nhanh nhanh mình cần gấp lắm rồi                                                                         5/6-2/9                                      2x5/18                                          3/4:9/10           3/12+5/6-3/4     

Answer 1

\(a,=\dfrac{5.9-2.6}{54}=\dfrac{11}{18}\\ b,=\dfrac{2.5}{18}=\dfrac{5}{9}\\ c,=\dfrac{3}{4}.\dfrac{10}{9}=\dfrac{5}{6}\\ c,=\dfrac{3+5.2-3.3}{12}=\dfrac{1}{3}\)

Answer 2

a: =15/18-4/18=11/18

b: =10/18=5/9

c: =3/4x10/9=30/36=5/6

d: =3/12+10/12-9/12=4/12=1/3

Answer 3

\(\dfrac{5}{6}-\dfrac{2}{9}=\dfrac{45}{54}-\dfrac{12}{54}=\dfrac{33}{54}=\dfrac{11}{18}\)

\(2x\dfrac{5}{18}=\dfrac{2}{1}x\dfrac{5}{18}=\dfrac{5}{9}\)

\(\dfrac{3}{4}:\dfrac{9}{10}=\dfrac{3}{4}x\dfrac{10}{9}=\dfrac{5}{6}\)

\(\dfrac{3}{12}+\dfrac{5}{6}-\dfrac{3}{4}=\dfrac{3}{12}+\dfrac{10}{12}-\dfrac{9}{12}=\dfrac{10}{12}=\dfrac{5}{6}\)

x là dấu nhân nhé

Answer 4

a = 15/18 - 4/18 = 11/18

b = 10/18 = 5/9

c = 3/4 . 10/9 = 30/36 = 5/6

d = 3/12 + 10/12 - 9/12 = 4/12 = 1/3

Tick cho mik nha

Answer 5

a) 5/6 - 2/9 = 5x3/6x3 - 2x2/9x2 = 15/18 - 4/18 = 11/18

b) 2x5/18 = 10/18 = 5/9

c) 3/4 : 9/10 = 3/4x10/9 = 5/6

d) 3/12+10/12-9/12 = 4/12 = 1/3