Answer:
idk
Step-by-step explanation:
<span>so quarters to nickels would be 4:20. simplified is 1:5</span>
Why not? Because every math system you've ever worked with has obeyed these properties! You have never dealt with a system where a×b did not in fact equal b×a, for instance, or where (a×b)×c did not equal a×(b×c). Which is why the properties probably seem somewhat pointless to you. Don't worry about their "relevance" for now; just make sure you can keep the properties straight so you can pass the next test. The lesson below explains how I kept track of the properties.
13-9 = 4
4-4 = 0
0 divided by 2 = 0
2x = 0
x = 0
