Question

somebody can help me with this fractions please.

Answer 1

ABSOLUTELY!

Answer 2

Sure...what do you need help with?

Answer 3

The denominator is the bottom number in a fraction.

Answer 4

"Common" Denominator just means that the denominators in two (or more) fractions are common, or the same.

Answer 5

If the denominators are not the same, you can either use the Least Common Denominator method to make them the same, or you can:

Multiply top and bottom of each fraction by the denominator of the other

Answer 6

For example:

\[\frac{ 1 }{ 3 } + \frac{ 2 }{ 5 } = \frac{ 1 \times 5 }{ 3 \times 5 } + \frac{ 2 \times 3 }{ 5 \times 3 }\]

\[\frac{ 5 }{ 15 } + \frac{ 6 }{ 15 }\]

Answer 7

Let's do the first question together so you know how to do one.
First look at the denominators of both the fractions.
See if they share any common multiples.
Since we know that 6 is a multiple of 3, we know that the least common denominator is 6.
3 goes into 6 two times (6/2=3)
That means you multiply the numerator and the denominator both by 2.
Since. 6 goes into 6 one time, you keep the fraction the same.

Answer 8

For further reference/help, you can go here:

http://www.mathsisfun.com/numbers/common-denominator.html

Answer 9

Hope that helps! :-)

Cheers!

Answer 10

so the answer for the 1.) is 27/18

Answer 11

1.) \[\frac{ 15 }{ 18 } and \frac{ 12 }{ 18 }\]

It would be this because, it says to turn it into a PAIR (meaning "two") of fractions with the same denominator. So, you wouldn't add them together.

Answer 12

It would be the other way around though. So:
\[\frac{ 12 }{ 18 } and \frac{ 15 }{ 18 }\]

Answer 13

thanks for your help

Answer 14

No problem. It is my job!

Cheers! :-)