Answer:
3x - 6
Explanation:
Let's call the number of coins Karen has "x".
According to the information given, Bill has 6 coins fewer than two times the number of coins Karen has, so we can write the following expression for the number of coins Bill has:
Bill: 2x - 6
To find the total number of coins Karen and Bill have, we simply add the number of coins each person has:
Karen + Bill: x + (2x - 6) = 3x - 6
So the total number of coins Karen and Bill have is 3x - 6.