489,094 views
4 votes
4 votes
2.6767.......

How do I write 2.67 w/ repeating 67 as a simplified fraction,...

Please show work (or provide explination)

User Joscas
by
2.6k points

1 Answer

11 votes
11 votes

Answer:


\displaystyle (265)/(99)

Explanation:

Hi there!

Let
x be equal to the fraction form of the decimal.


x=2.\overline{67}

Multiply both sides by 100:


100x=267.\overline{67}

The reason we multiply both sides by 100 is that 2.6767... has two repeating decimals, 6 and 7, and 100 has two zeros.

Now, we have these two equations:


100x=267.\overline{67}


x=2.\overline{67}

Subtract
x=2.\overline{67} from
100x=267.\overline{67}:


100x=267.\overline{67}\\- x=2.\overline{67}\\\rule{70}{0.5}\\99x=265

Isolate
x by dividing both sides by 99:


\displaystyle x=(265)/(99)

I hope this helps!

User LeDoc
by
3.5k points