231k views
3 votes
Express 4.77777..... in the form of p/q​

1 Answer

6 votes

Answer:


(43)/(9)

Explanation:

We require 2 equations with the repeating 7 placed after the decimal point.

let x = 4.7777... → (1)

Multiply both sides by 10

10x = 47.7777.... → (2)

Subtract (1) from (2) thus eliminating the repeating 7

9x = 43 ( divide both sides by 9 )

x =
(43)/(9)

User Steve Gelman
by
4.2k points