Posted by **I dunno** on Saturday, July 28, 2007 at 7:10pm.

what is an eay way to add 1/5 1/2 and 1/7. I have to find a number that they all go into for a similar denominator right? but how do I do that without taking forever.

Multiply the denominators:

5 x 2 x 7 = ??

=)

As Writeacher has noted, the common denominator is 70 in this case. Convert each fraction to the equivalent value with 70 as the denominagtr, and add them.

1/5 = 14/70

1/2 = 35/70

1/7 = 10/70

## Answer this Question

## Related Questions

- 6th grade math - I still do not understand this problem? find a number such that...
- Math - I still do not understand fractions?????? 2/3 + 1/3 + 5/6 = divide all of...
- Please Help Me Math - Find the sum and express in simplest form. Show all work: ...
- Math - How would I describe a step-by-step procedure for adding two fractions ...
- drbob222 - Are you available to help for a few more min. I am back. Been gone ...
- math - i need some to explain how to turn 1.05 into a fraction Do you know how ...
- math HOW DO I CONVERT A FRACTION TO A DECIMAL??? - how do i convert a fraction ...
- math - what is the least common denominator? It is the smallest number into ...
- Math PLEASE HLP!!!! - use fraction bars to help: a) 11/12=w+y b)3/8=3/6-k c)1/4=...
- Math - How do you add this? -5/6 + 1/2 -5/6 + 1/2= 8/6 I know to find the lowest...