4(3x + 6y) + 12x + 4y = ? must be four letter awnser

How to determine whether two known pairs of points are on the same line.

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

What is the missing step in this proof ?