Question

escreva os nùmerosa sequir na forma de frecão a) 2,5 b) 17,333333.... c) 1, 7777777..... d) 1,2525252525..... e) 0,145145155145.... f) 1,789789789789.....

Answer 1

a)25/10 
b)17333333/1000000
c)17777777/10000000
d)12525252525/10000000000
e)145145155145/1000000000000
f)1789789789789/1000000000000

Answer 2

a) 2,5 = 25/10 = 5/2

b) 17,333... = 17 3/9 = (9 x 17 + 3)/9 = 156/9 = 52/3

c) 1,777... = 1 7/9 = (9 x 1 + 7)/9 = 16/9

d) 1,2525... = 1 25/99 = (99 x 1 + 25)/99 = 124/99 

e) 0,145145... = 145/999 = 

f) 1,789789... = 1 789/999 = (999 x 1 + 789)/999 = 1788/999 = 596/333

Espero ter ajudado.