Question

First, rewrite 2/7 and 3/10
so that they have a common denominator

Answer 1

Answer: Common denominator = 70

Step-by-step explanation: In order to find a common denominator, we need to find what number they have in common. That'd be 70. So, now rewrite the fractions like this:

`(2)/(7) = (?)/(70)`

`(3)/(10) = (?)/(70)`

Now, we need to find the equivalent fractions on the right. To do that, use this formula for part 1:

Right denominator / left denominator

Then, what you get after dividing those 2, you multiply by the left numerator.

So, let's plug the numbers in:

70 / 7 = 10

10 * 2 = 20

Therefore,
`(2)/(7) = (20)/(70)`

70 / 10 = 7

3 * 7 = 21

Therefore,
`(3)/(10) = (21)/(70)`

I hope this helped!

Answer 2

The common denominator will be 70

Explanation:

To set the fractions to a common denominator, we need to know what number they both share. In this case, both 7 and 10 share the number 70, since 7 * 10 is 70.

Therefore, we can multiply 2/7 by 10/10 and 3/10 by 7/7:

`(2)/(7)` *
`(10)/(10)` =
`(20)/(70)`

`(3)/(10)` *
`(7)/(7)` =
`(21)/(70)`