vamos lá.
a)
x = 0,999...
10x = 9,999....
9x = 9
x = 1
b)
x = 0,777...
10x = 7,777...
9x = 7
x = 7/9
1 + 7/9 = 16/9
c)
x = 0,034...
1000x = 34,034034034...
999x = 34
x = 34/999
1 + 34/999 = 1033/999
d)
0,0222... = 1/45
e)
0,2333... = 7/30
f)
0,456456456... = 152/333
3 + 152/333 = 1151/333
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vamos lá.
a)
x = 0,999...
10x = 9,999....
9x = 9
x = 1
b)
x = 0,777...
10x = 7,777...
9x = 7
x = 7/9
1 + 7/9 = 16/9
c)
x = 0,034...
1000x = 34,034034034...
999x = 34
x = 34/999
1 + 34/999 = 1033/999
d)
0,0222... = 1/45
e)
0,2333... = 7/30
f)
0,456456456... = 152/333
3 + 152/333 = 1151/333