Respuesta :

Answer:

79 over 90

Step-by-step explanation:

Let 10x =8.7

and

100x = 87.7

We now have two equations. Subtracting the largest from the smallest:

100x = 87.7

10x = 8.7

-------------

90x = 79

x = 79

90

Hence,

0.877777...= 79

90.

Hopefully this helps!