Check out these circles:
The first one says that is red and the second one says that is red... But, the same amount is red on both circles!
So, must be the same amount as .
These are called equivalent fractions. (Since they are equal amounts.)
Look at another one:
The same amount is green on both so
You'll see more of this in the Equivalent Fractions Part 2 lesson, but here's a preview:
If you multiply the numerator and denominator of by 3, you get .