How do I change denominators in fractions?

Question

anonymous · Answer

multiply them

anonymous · Answer

if u give me an example i can work threw it 4 u

mertsj · Answer

You change denominators by multiplying the fraction by 1.  The name for 1 that you use is the key.  1 has many names:  2/2   3/3   4/4   5/5   6/6   7/7   you get my drift.  You choose the name for 1 based on the denominator you want to end up with.

mertsj · Answer

If your denominator is 3 and you want to end up with a denominator of 12, then you would choose 4/4 as your name for 1

anonymous · Answer

So long as you multiply the numerator when you multiply the denominator (by the same #) it dosnt matter what you multiply it by

mertsj · Answer

$$\frac{2}{3}(\frac{4}{4})=\frac{8}{12}$$

mertsj · Answer

If you wanted to end up with a denominator of 15, you would choose 5/5 as your name for 1

ragingsquirrel · Answer

You can also divide, which I fine a lot easier

mertsj · Answer

$$\frac{2}{3}(\frac{5}{5}) = \frac{10}{15}$$