"Enlarge 4/5 to the equivalent fraction in tenths?" How can I find a tutorial to show me how to do this?
This process is called expanding the fraction by a form of 1. As you should know multiplying by 1 does not change the value of the multiplicand.
2/2 * 4/5
======Reverse process to reduce fractions. When you get to college algebra and calculus you will need to start doing these in your head.