@the-blade-dancer Thank you for catching that!! I've passed it on 🙂
But, in the next few videos Po shen loh will explain
It is still supposed to be a=b=4.
The reason is because if "a" and "b" are both 4, then a shorter way of writing it is a=b=4.
where the first is "a" and second is "b"
Finding the Unknown
XD What a funny typo!