Question

se a=0,111...,b= 1 e c=9/99,calcule o valor de:
a) a + c b) b . c c) a - c d)b : c

Answer 1

a) $\frac{111}{1000} + \frac{9}{99}$ = $mmc \frac{1221+1000}{11000}$
R: $\frac{2221}{11000} = 0,201909$

b) $1 . \frac{9}{99}$ = 
R: $\frac{1}{11} = 0,0909091$

c) $\frac{9}{99} = 11$