Michelle walks some dogs every afternoon. She walked the same number of dogs each day except friday, when she walked 3 dogs. if she walked a total of 15 dogs this week, how many dogs did she walk on each of the other 6 days. Write and solve an equation to answer the question, and then identify the statement that is not true.

A. X represents the number of dogs walked each day except friday
B. The solution is x=3
C. The equation is 6x + 3=15
D. The first step in solving the equation is to subtract 3 from both sides of the equation