Julia is using the distributive property to simplify 3(x + 2). Find her mistake and correct it.

2 answers

Julia's mistake: 3(x + 2) = 3x + 6

Correct answer: 3(x + 2) = 3x + 6
Julia's solution was not show, so how can we correct it ?

the robot tutor somehow saw a mistake in 3(x+2) = 3x + 6
and the "corrected" it by stating exactly the same result, lol

btw, if the robot's clairvoyance property was able to see Julia's solution,
what made it decide it was a mistake ???