a)
x=0,0(21)
10x=0,(21)
1000x=21,(21)
1000x-10x=21
990x=21
x=21/990
b)
x=0,2(32)
10x=2,(32)
1000x=232,(32)
990x=230
x=230/990
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a)
x=0,0(21)
10x=0,(21)
1000x=21,(21)
1000x-10x=21
990x=21
x=21/990
b)
x=0,2(32)
10x=2,(32)
1000x=232,(32)
990x=230
x=230/990