They did the joke wrong. To do it right you need to use the ÷ symbol. Because people never use that after they learn fraction, people treat things like a + b ÷ c + d as
a + b
-----
c + d
Or (a + b) ÷ (c + d) when they should be treating it as a + (b ÷ c) + d.
That’s the most common one of these “troll.math” tricks. Because notating as
a + b + d
-
c
Is much more common and useful. Do people get used to grouping everything around the division operator as if they’re in parentheses.
They did the joke wrong. To do it right you need to use the ÷ symbol. Because people never use that after they learn fraction, people treat things like a + b ÷ c + d as
a + b ----- c + dOr (a + b) ÷ (c + d) when they should be treating it as a + (b ÷ c) + d.
That’s the most common one of these “troll.math” tricks. Because notating as
a + b + d - cIs much more common and useful. Do people get used to grouping everything around the division operator as if they’re in parentheses.