escreva sob a forma de fracao irredutivel as seguintes dizimas: a)-1,2323.... b)0,0505.....c)0,5444.....
pfv! me ajudem! obg
baebergamota:
Amigo, na letra a é -122/99, desculpe o vacilo
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a)-1,2323...
x=1,2323
100x=123,2323...
100x-x=123,2323...-1,232323...
99x=122
x=122/99
b)0,05050...
x=0,05050...
1000x=50,505050...
100000x=5050,5050...
100000x-1000x=5050,5050...-50,5050...
99000x=5000
x=5000/99000
x=5/99
c)0,54444...
x=0,54444...
10x=5,4444...
100x=54,444...
100x-10x=54,444...-5,444...
90x=49
x=49/90
x=1,2323
100x=123,2323...
100x-x=123,2323...-1,232323...
99x=122
x=122/99
b)0,05050...
x=0,05050...
1000x=50,505050...
100000x=5050,5050...
100000x-1000x=5050,5050...-50,5050...
99000x=5000
x=5000/99000
x=5/99
c)0,54444...
x=0,54444...
10x=5,4444...
100x=54,444...
100x-10x=54,444...-5,444...
90x=49
x=49/90
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