A park has 18 swings. 3/9 of them are tire swings. how many of the swings are tire swings?
3/9 is equal to 6/18, so 6/18 of them are tire swings. 9 * 2 = 18. So I had to multiply that with the numerator 3 * 2 = 6.
That's easy 3/9 are tire swings double the denominator and the numerator to equal 6/18 . That means there are 6 tire swings.