\(\frac{3.5.7.11.13.37-10101}{\left(1212120-41414\right)}\)

=\(\frac{\left(3.5.7.11.13.37\right).5-10101.1}{120.10101-4.10101}\)

=\(\frac{10101.\left(5-1\right)}{10101.\left(120-4\right)}\)=\(\frac{4}{116}\)=\(\frac{1}{29}\)

Bài 1: 

5/10=1/2

25/75=1/3

42/56=3/4

18/48=3/8

21/28=3/4

39/104=3/8

5/10=1/2,

25/75=1/3, 

42/56=3/4

18/48=3/8

21/28=3/4

39/104=3/8

5/10=1/2,

25/75=1/3, 

42/56=3/4

18/48=3/8

21/28=3/4

39/104=3/8

giúp mình với, đi mà mọi người mình đang cần gấp mà

a) 2/3,1/4,1/2,21/44
b) 2/3,3/5,1/8,1/3

a)8/5-18/27=216/135-90/135=126/135

b)3/5-1/3=9/15-5/15=4/15(rút gọn p/s)

c)1/3-1/5=5/15-3/15=2/15

d)6/7-12/27=162/189-84/189=78/189

a) 8/5 - 18/27

= 8/5 - 2/3

= 24/15 - 10/15

= 14/15

b) 12/20 - 6/18

= 3/5 - 1/3

= 9/15 - 5/15

= 4/15

c) 8/24 - 5/25

= 1/3 - 1/5

= 5/15 - 3/15

= 2/15

d) 18/21 - 12/27

= 6/7 - 4/9

= 54/63 - 28/63

= 26/63

25/30 = 5/6

15/45 = 1/3

đ/s : ...

25/30=25:5/30:5=5/6

15/45=15:15/45:15=1/3

3201120 bạn nhé.

636546473737474 + 187373747 =636548347474948

k mình nha

636546661111221

364657575384857 + 198378747 =739394060194

k mình nhé

364657773763604

364 657 575 384 857 + 198 378 747 =  364 657 773 763 604

7367584420194

=736758420194

=7367584420194 nha.

mk đúng đầu tiên