Exactly, zak. ....
Zakly ? --oh wait, that wouldn't be perfect grammar, and none would understand.
I've been a student, and a teacher(engineering). When doing, or grading math problems sloppy syntax is no biggie, as long as people get to where they need to go. --Using math is not the same as publishing math, except for the math geeks, whose heads explode if every little step isn't perfect. (because they are so committed to the structure)