Order of Operations and RPN

[rprosperi]

(02-09-2020 12:32 PM)toml_12953 Wrote:  I don't get the expression on pg 4 and 5. How is (9-5)+2 the same as (9+-5)*1/2 ?

The initial equation is actually (9-5) / 2, though using the obelus division symbol (where I show the slash), which unfortunately looks like a plus sign because the font used is fuzzy.