What is the difference in length between 3/4 and 1 1/2

the difference is 3

Step-by-step explanation:

1 1/2 is equal to 6/2 so the difference would be 3

You start off by finding common denominators. To do that we first have to take 1 1/2 and change it to 3/2 and you get that by adding 1/2 to 2/2, which is equal to 1. Then you have to get your denominator of 2 to be equal to your denominator of 4, so we do that by multiplying the top and bottom of 3/2 by 2. giving us 6/4. then it is a simple subtraction problem, 6/4 - 3/4, and from that we subtract across getting 3/4.