Answer: It tells you that the answer that you are solving need to be the same for both w to make that the equation on both sides be true and have the same number to make it true.
Lets use 3 as an example to replace w for 3 for both sides
6(3)-2= 6(3)-2
18-2= 18-2
16=16
It does equal so that would be an good example to show it but lets try another example.
6(6)-2=6(6)-2
36-2= 36-2
34= 34
It does equal and that would be two good examples i just show you so thats it for today and have a great day.
Explanation: