I can only try-
My sister once showed me some math mix ups that actually work. For example:
19/95 => cross out the 9 from the numerator and denominator => 1/5.
Can you think of any others? (I don’t know of any off hand.)
I was once sitting next to someone on the train who was doing his homework and he was solving for x.
He had 2x = 24. So he crossed out the 2 from both sides and circled x = 4. I was in so much pain so I asked him if I could help, I told him I liked math in school.
“Sir”, he replied, “this isn’t regular math, it’s college level algebra, it’s not as easy as it looks. I don’t think you’ll be able to help me.”