Question

por favor me ajudem ​

Answer 1

Resolvendo:

a)

$a=-0,888...\\10a=-8,888...\\-------\\9a=-8\\a=-\frac{8}{9}$

c)

$b=-1,2121...\\10b=-12,12121...\\100b=-121,2121...\\\\100b=-121,2121...\\-(b=-1,2121...)\\---------\\99b=-120\\b=-\frac{120}{99}$

e)

$c=0,566...\\10c=5,666...\\100c=56,666...\\\\100c=56,666...\\-(10c=5,666...)\\--------\\90c=51\\c=\frac{51}{90}$

b)

$d=0,3737...\\10d=3,73737...\\100d=37,3737...\\\\100d=37,3737...\\-(d=0,3737...)\\--------\\99d=37\\d=\frac{37}{99}$

d)

$e=0,0505...\\10e=0,5050...\\100e=5,0505...\\\\100e=5,0505...\\-(e=0,0505...)\\--------\\99e=5\\e=\frac{5}{99}$

f)

$f=1,4333...\\10f=14,333...\\100f=143,333...\\\\100f=143,333...\\-(10f=14,333...)\\---------\\90f=129\\f=\frac{129}{90}$

Espero ter ajudado!

Desculpe qualquer erro.