The 4-9 is wrong it should have been -5 and not 13 a how him got that Mr did have to go over the video to see how him got that answer cause I was wondering
Some people I’m the comments really don’t know how to do maths. If you’re here you clearly don’t know how to do it so let him do his job don’t try and correct him when he’s the one teaching us
currently in 8th grade doing zoom figuring out how to do this within 4 months left of school hoping i’ll finish my math targets and get into highschool 🙂
he said 0x so that students don't get confused and can understand that there are no x's left. To a beginner I can imagine how simple and easy to understand this explanation was.