Question

Fração geatriz de :

0,77777...
0,555...

Answer 1

$\frac{7}{9} = 0,7777..$$\frac{5}{9}= 0,5555..$

Answer 2

x = 0,777..  *  10  =  10x = 7,7777⇒10x=7,777... - 0,777... =9x =7 ⇒7/9

x=0,555... * 10 =10x=5,555.. ⇒10x=5,555...- x=0,555... = 9x=5 ⇒ 5/9

R→ 7/9

R→ 5/9