What's the question? I'll help with it as much as I can :)
First you must find a common denominator. In this case 10 will work. You then multiply the top number by whatever you multiplied the bottom number by. This is shown below:
4/5- 3/10 = 8/10- 3/10
You can now solve this to get 5/10. This answer can then be reduced to 1/2.
You count how many places the number is away from 0. try writing it out in an equation it would help
Answer: Associative Property
Step-by-step explanation:
