Question

determine a fraçao geratriz das dizinas simplis:
a) 3,15

b)0,777

c) 0,3838

d)1,145

Answer 1

a-3,15
315/100=63/20

b-0,777
0,777...
x=0,777...
10x=7,777...
10x-x=7,777...-0,777...
9x=7
x=7/9

c-0,3838
x=0,3838
100x=38,3838
100x-x=38,3838-0,3838
99x=38
x=38/99

d-1,145
1145/1000=229/200